Oxides Group Publications

Journal Publications

      • High pressure synthesis of SmNiO3 thin films and implications for thermodynamics of the nickelates, R. Jaramillo, F. Schoofs, S. D. Ha and S. Ramanathan, Journal of Materials Chemistry C, 1, 2455 (2013)
      • Thermal tuning of mid-infrared plasmonic antenna arrays using a phase change material, M. A. Kats, R. Blanchard, P. Genevet, Z. Yang, M. M. Qazilbash, D. N. Basov, S. Ramanathan and F. Capasso, Optics Letters, 38, 368 (2013)
      • Space charge polarization induced memory in SmNiO3 / Si transistors, S. H. Lee, M. Kim, S. D. Ha, J. W. Lee, S. Ramanathan and S. Tiwari, Applied Physics Letters, 102, 072102 (2013)
      • Correlated electron materials and field effect transistors for logic: A review, Y. Zhou and S. Ramanathan, Critical Reviews in Solid State and Materials Sciences, to appear, 2013 (arxiv Author's preprint)
      • Hall effect measurements on epitaxial SmNiO3 thin films and implications for antiferromagnetism, S. D. Ha, R. Jaramillo, D. M. Silevitch, F. Schoofs, K. Kerman, J. D. Baniecki and S. Ramanathan,Physical Review B, to appear, 2013 (arxiv Author's preprint)
      • Voltage triggered ultrafast phase transition in vanadium dioxide switches, Y. Zhou, X. Chen, Z. Yang, C. Mouli and S. Ramanathan, IEEE Electron Device Letters, 34, 220 (2013)
      • Epitaxial variants of VO2 thin films on complex oxide single crystal substrates with 3m surface symmetry, F. J. Wong, Y. Zhou and S. Ramanathan, Journal of Crystal Growth, 364, 74 (2013)
      • Electric field assisted annealing effects on microstructure and ionic conductivity in ceria/YSZ oxide heterostructures, R. Subbaraman, S. K. R. S. Sankaranaryanan and S. Ramanathan, Philosophical Magazine, in press (2013)
      • Nanoscale oxidation and complex oxide growth on single crystal iron surfaces and external electric field effects, B. Jeon, Q. van Overmeere, A. C. T.van Duin and S. Ramanathan, Physical Chemistry Chemical Physics, 15, 1821 (2013)
      • Elastic configurations of self-supported oxide membranes for fuel cells, K. Kerman, T. Tallinen, S. Ramanathan and L. Mahadevan, Journal of Power Sources, 222, 359 (2013)
      • Suspended sub-50nm vanadium dioxide membrane transistors: fabrication and ionic liquid gating studies, J. S. Sim, Y. Zhou and S. Ramanathan, Nanoscale,4, 7056 (2012)
      • Ultra-thin perfect absorber employing a tunable phase change material, M. Kats, D. Sharma, J. Lin, P. Genevet, R. Blanchard, Z. Yang, M. M. Qazilbash, D. N. Basov, S. Ramanathan and F. Capasso,Applied Physics Letters, 101, 221101 (2012)
      • Heteroepitaxial VO2 thin films on GaN: structure and metal-insulator transition characteristics, Y. Zhou and S. Ramanathan, Journal of Applied Physics, 112, 074114 (2012)
      • Orientation dependent oxygen exchange kinetics on single crystal SrTiO3 surfaces, K. Kerman, C. Ko and S. Ramanathan, Physical Chemistry Chemical Physics, 14, 11953 (2012)
      • Relaxation dynamics of ionic liquid / VO2 interfaces and influence in electric double layer transistors, Y. Zhou and S. Ramanathan, Journal of Applied Physics, 111, 084508 (2012)
      • Evolution of local work function in epitaxial VO2 films spanning the metal-insulator transition, A. Sohn, H. Kim, D. W. Kim, C. Ko, S. Ramanathan, J. Park, G. Seo, B. J. Kim, J. H. Shin and H. T. Kim,Applied Physics Letters, 101, 191605 (2012)
      • Energy storage in ultra-thin solid oxide fuel cells, Q. van Overmeere, K. Kerman and S. Ramanathan, Nano Letters, 12, 3756 (2012)
      • Multi-resistance states through electrically-driven phase transitions in VO2/HfO2/VO2 heterostructures on silicon, Y. Zhou, Z. Yang and S. Ramanathan, IEEE Electron Device Letters, 33, 101 (2012)
      • Electrothermal actuation of metal-insulator transition in SmNiO3 thin film devices above room temperature, S. D. Ha, B. Viswanath and S. Ramanathan, Journal of Applied Physics, 111, 124501 (2012)
      • Stable metal-insulator transition in epitaxial SmNiO3 thin films, S. D. Ha, M. Otaki, R. Jaramillo, A. Podpirka and S. Ramanathan, Journal of Solid State Chemistry, 190, 233 (2012)
      • Nanoscale compositionally graded thin-film electrolyte membranes for low temperature solid oxide fuel cells, K. Kerman, B. K. Lai and S. Ramanathan, Advanced Energy Materials, 2, 656 (2012)
      • Synthesis and frequency-dependent dielectric properties of epitaxial La1.875Sr0.125NiO4 thin films, A. Podpirka, A. Tselev and S. Ramanathan, Journal of Physics D: Applied Physics, 45, 305302 (2012)
      • Ultra-thin film solid oxide fuel cells utilizing un-doped nanostructured zirconia electrolytes, C. Ko, K. Kerman and S. Ramanathan, Journal of Power Sources, 213, 343 (2012)
      • In-situ studies on twinning and cracking proximal to insulator-metal transition in self-supported VO2 / Si3N4 membranes, B. Viswanath, C. Ko and S. Ramanathan, Journal of Materials Research, 27, 1476 (2012)
      • In-situ stress relaxation and diffraction studies across metal-insulator transition in epitaxial and polycrystalline SmNiO3 thin films, B. Viswanath, G. H. Aydogdu, S. D. Ha and S. Ramanathan,Scripta Materialia,66, 463 (2012)
      • Nanostructured ruthenium - gadolinia-doped ceria composite anodes for thin film solid oxide fuel cells, Y. Takagi, S. Adam and S. Ramanathan, Journal of Power Sources, 217, 543 (2012)
      • Considerations on ultra-high frequency electric field effects on oxygen vacancy concentration in oxide thin films, S. K. R. S. Sankaranarayanan, R. Subbaraman and S. Ramanathan, Physical Chemistry Chemical Physics, 14, 3360 (2012)
      • Fabrication and physical properties of thin TixOy membranes from single crystal TiO2, M. Abazari, J. S. Sim, B. Viswanath and S. Ramanathan, Journal of Vacuum Science and Technology A, 30, 021601-1 (2012) (also selected for publication in Vitrual Journal of Nanoscale Science and and Technology, Jan 23, 2012 issue)
      • Studies on room temperature electric field effect in ionic-liquid gated VO2 three-terminal devices, Z. Yang, Y. Zhou and S. Ramanathan, Journal of Applied Physics, 111, 014506 (2012)
      • Free standing oxide alloy electrolytes for low temperature thin film solid oxide fuel cells, K. Kerman, B. K. Lai and S. Ramanathan, Journal of Power Sources, 202, 120 (2012)
      • Heteroepitaxial La2-xSrxNiO4 - Nb-doped SrTiO3 junctions: synthesis and rectification characteristics, A. Podpirka and S. Ramanathan, Journal of the Electrochemical Society, 159, H72 (2012)
      • Chemical stabilty and surface stoichiometry of vanadium oxide phases studied by reactive molecular dynamics simulations, B. Jeon, C. Ko, A. C. T. van Duin and S. Ramanathan, Surface Science, 606, 516 (2012)
      • Synthesis of vanadium dioxide thin films on conducting oxides and metal-insulator transition characteristics, Y. Cui, X. Wang, Y. Zhou, R. G. Gordon and S. Ramanathan, Journal of Crystal Growth, 338, 96 (2012)
      • Probing compositional disorder in vanadium oxide thin films grown on atomic layer deposited hafnia on silicon by capacitance spectroscopy, C. Ko, Y. Zhou and S. Ramanathan, Journal of Vacuum Science and Technology A, 30, 011501 (2012)
      • Reactive molecular dynamics study of chloride ion interaction with copper oxide surfaces in aqueous media, B. Jeon, S. K. R. S. Sankaranarayanan, A. C. T. van Duin and S. Ramanathan, ACS Applied Materials and Interfaces, 4, 1225 (2012)
      • High temperature electrical conductivity measurements on nanostructured yttria-doped ceria thin films in ozone, M. Abazari, M. Tsuchiya and S. Ramanathan, Journal of the American Ceramic Society, 95, 312 (2012)
      • Electronic granularity and the work function of transparent conducting ZnO:Al thin films, R. Jaramillo and S. Ramanathan, Advanced Functional Materials, 21, 4068 (2011)
      • Adaptive oxide electronics: A review, S. D. Ha and S. Ramanathan, Applied Physics Reviews-Journal of Applied Physics , 110, 071101 (2011)
      • Examination of insulator regime conduction mechanisms in epitaxial and polcrystalline SmNiO3 thin films, S. D. Ha, G. Aydogdu and S. Ramanathan, Journal of Applied Physics, 110, 094102 (2011) 
      • High current density monolayer CdSe/ZnS quantum dot light emiting devices with oxide electrodes, E. Likovich, R. Jaramillo, K. J. Russell, E. Hu, S. Ramanathan and V. Narayanamurti, Advanced Materials, 23, 4521 (2011)
      • Thickness dependent orientation evolution in nickel thin films grown on yttria stabilized zirconia single crystals, B. Viswanath, C. Ko and S. Ramanathan, Philosophical Magazine, 91, 4311 (2011)
      • Tuning the conductivity of vanadium dioxide thin films on silicon by swift heavy ion irradiation, H. Hofsass, P. Ehrhardt, H. G. Gerhrke, M. Brotzmann, U. Vetter, K. Zhang, J. Krauser, C. Trautmann, C. Ko and S. Ramanathan, AIP Advances, 1, 032168 (2011)
      • Voltage-pulse induced switching dynamics in VO2 thin film devices on silicon, G. Seo, B. J. Kim, C. Ko, Y. Cui, Y. W. Lee, J. H. Shin, S. Ramanathan and H. T. Kim, IEEE Electron Device Letters, 32, 1582 (2011)
      • Narrow band defect luminescence from Al-doped ZnO probed by scanning tunneling cathodoluminescence, E. Likovich, R. Jaramillo, K. J. Russell, S. Ramanathan and V. Narayanamurti, Applied Physics Letters, 99, 151910 (2011)
      • Work function of vanadium dioxide thin films across the metal-insulator transition and the role of surface non-stoichiometry, C. Ko, Z. Yang and S. Ramanathan, ACS Applied Materials and Interfaces, 3, 3396 (2011)
      • Terahertz spectroscopy studies on epitaxial vanadium oxide thin films across the metal-insulator transition, P. Mandal, A. Speck, C. Ko and S. Ramanathan, Optics Letters, 36, 1927 (2011)
      • Oxide electronics utilizing ultrafast metal-insulator transitions, Z. Yang, C. Ko and S. Ramanathan,Annual Reviews of Materials Research, 41, 337 (2011)
      • Electrically-driven metal-insulator transition with tunable threshold voltage in a VO2-SmNiO3 hetersotructure on silicon, S. D. Ha, G. H. Aydogdu, B.Viswanath and S. Ramanathan, Journal of Applied Physics, 110, 026110 (2011)
      • Low Temperature thin film solid oxide fuel cells with nanoporous ruthenium anodes for direct methane operation, Y. Takagi, K. Kerman, B. K. Lai and S. Ramanathan, Energy and Environmental Science, 4, 3473 (2011)
      • Scalable nanostructured membranes for solid oxide fuel cells, M. Tsuchiya, B.K. Lai and S. Ramanathan, Nature Nanotechnology, 6, 282 (2011)
      • Epitaxy, strain and composition effects on metal-insulator transition characteristics of SmNiO3 thin films, G. H. Aydogdu, S. D. Ha, B. Viswanath and S. Ramanathan, Journal of Applied Physics, 109, 124110 (2011)
      • Direct measurement of compositional-complexity induced electronic in-homogenity in VO2 thin films grown on gate dielectrics, Z. Yang and S. Ramanathan, Applied Physics Letters, 98, 192113 (2011)
      • Studies on electric triggering of the metal-insulator transition in VO2 thin films between 77K and room temperature, Z. Yang, S. Hart, C. Ko, A. Yacoby and S. Ramanathan, Journal of Applied Physics, 110, 033725 (2011)
      • Substrate-dependent metal-insulator transition characteristics of epitaxial vanadium oxide thin films, Y. Cui and S. Ramanathan, Journal of Vacuum Science and Technology A, 29, 041502 (2011)
      • Analysis of "ON" and "OFF" times for thermally driven VO2 metal-insulator transition nanoscale switching devices, Y. Zhang and S. Ramanathan, Solid State Electronics, 62, 161 (2011)
      • Thin film nanocrystalline Ba0.5Sr0.5Co0.8Fe0.2O3: Synthesis, conductivity and micro-solid oxide fuel cells, K. Kerman, B. K. Lai and S. Ramanathan, Journal of Power Sources, 196, 6214 (2011)
      • Synthesis of hollow porous nanospheres of hydroxyl titanium oxalate and their topotactic conversion to anatase titania, D. Da, S. T. Martin and S. Ramanathan, Journal of Materials Research, 26, 1545 (2011)
      • Size effects on stress relaxation across the metal-insulator transition in VO2 thin films, B. Viswanath, C. Ko and S. Ramanathan, Journal of Materials Research, 26, 1384 (2011)
      • Atomistic insights into aqueous corrosion of copper, B. Jeon, S. K. R. S. Sankaranaryanan, A. C. T. van Duin and S. Ramanathan, Journal of Chemical Physics, 134, 234706 (2011)
      • Scanning tunneling microscope investigation of local density of states in Al-doped ZnO thin films, E. Likovich, R. Jaramillo, K. J. Russell, S. Ramanathan and V. Narayanmurti, Physical Review B, 83, 075430 (2011)
      • Influence of surface orientation and defects on early stage oxidation and ultrathin oxide growth on pure copper, B. Jeon, S.K.R.S. Sankaranarayanan, A.C.T. van Duin and S. Ramanathan,Philosophical Magazine, 91, 4073 (2011)
      • Methane-fueled thin film micro-solid oxide fuel cells with nanoporous palladium anodes, B. K. Lai, K. Kerman and S. Ramanathan, Journal of Power Sources, 196, 6299 (2011)
      • Compositional and metal-insulator transition characteristics  of sputtered vanadium oxide thin films on yttria-stabilized zirconia, G. Gopalakrishnan and S. Ramanathan, Journal of Materials Science, 46, 5768 (2011)
      • Geometric confinement effects on the metal-insulator transition temperature and stress relaxation in VO2 thin films grown on silicon, B. Viswanath, C. Ko, Z. Yang and S. Ramanathan, Journal of Applied Physics, 109, 063512 ( 2011)
      • Metal-insulator transition and electrically-driven memristive characteristics of SmNiO3 thin films, S. Ha, G. Aydogdu and S. Ramanathan, Applied Physics Letters, 98, 012105 (2011)
      • Thin film colossal dielectric constant oxide La2-xSrxNiO4</sub>: Synthesis, dielectric relaxation measurements and electrode effects, A. Podpirka and S. Ramanathan, Journal of Applied Physics, 109, 014106 (2011)
      • Atomistic modeling of ultra-thin surface oxide growth on a ternary alloy: Oxidation of Al-Ni-Fe, B. Jeon, S.K.R.S. Sankaranaryanan and S. Ramanathan, Journal of Physical Chemistry C, 115, 6571 (2011)
      • Kelvin force microscopy studies of work function of transparent conducting ZnO:Al electrodes synthesized under varying oxygen pressures, R. Jaramillo and S. Ramanathan, Solar Energy Materials and Solar Cells, 95, 602 (2011)
      • Studies on oxygen chemical surface exchange and electrical conduction in thin film nanostructured titania at high temperatures and varying oxygen pressure, C. Ko, A. Karthikeyan and S. Ramanathan, Journal of Chemical Physics, 134, 014704 (2011)
      • Mechanistic studies on room temperature photo-excitation effects on passivity breakdown in ultra-thin surface oxide films formed on ternary Al-5%Cu-5%Ni alloys, C. L. Chang, M. Engelhard and S. Ramanathan, Journal of Physical Chemistry C, 114, 17788 (2010)
      • Interface proximity effects on ionic conductivity in nanoscale oxygen-ion conducting yttria stabilized zirconia : An atomistic simulation study, S.K.R.S. Sankaranarayanan and S. Ramanathan, Journal of Chemical Physics, 134, 064703 (2011) ; also selected for publication in Virtual Journal of Nanoscale Science and Technology, Feb 21, 2011 issue
      • Nanoscale probing of electronic bandgap and topography of VO2 thin film surfaces by scanning tunneling microscopy, W. Yan, S. A. Wolf, C.Ko, S. Ramanathan and P. Reinke, Journal of Applied Physics, 109, 024311 (2011)
      • Thermoelastic switching with controlled actuation in VO2 thin films, B. Viswanath, C. Ko and S. Ramanathan, Scripta Materialia, 64, 490 (2011)
      • Influence of interfaces on impedance response and breakdown of oxide-metal multilayer structures, M. Abazari, C.L. Chang, Q. Xue and S. Ramanathan, Thin Solid Films, 519, 3196 (2011)
      • Dielectric and carrier transport properties of vanadium dioxide thin films across the phase transition utilizing gated capacitor devices, Z. Yang, C. Ko, V. Balakrishnan, G. Gopalakrishnan and S. Ramanathan, Physical Review B, 82, 205101 (2010)
      • Metastable incorporation of oxygen into thin film NiO by low temperature active oxidation: Influence on hole conduction, G.H. Aydogdu, D. Ruzmetov and S. Ramanathan, Journal of Applied Physics, 108, 113702 (2010)
      • Pt/Y0.08Zr0.92O1.96/Pt thin film solid oxide fuel cells: Electrode microstructure and stability considerations, K. Kerman, B.K. Lai and S. Ramanathan, Journal of Power Sources, 196, 2608 (2011)
      • Active low temperature oxidation as a route to minimize electrode-oxide interface reactions in nanoscale capacitors, A. Podpirka, B. Viswanath and S. Ramanathan, Journal of Applied Physics, 108, 024106 (2010)
      • Nanostructured La0.6Sr0.4Co0.8Fe0.2O3/Y0.08Zr0.92O1.96/La0.6Sr0.4Co0.8Fe0.2O3 (LSCF/YSZ/LSCF) Symmetric Thin Film Solid Oxide Fuel Cells, B. K. Lai, K. Kerman and S. Ramanathan, Journal of Power Sources, 196, 1826 (2011)
      • Metal-insulator transition characteristics of VO2 thin films grown on Ge (100) single crystals, Z. Yang, C. Ko and S. Ramanathan, Journal of Applied Physics, 108, 073708 (2010)
      • High temperature electrical conduction studies in nanoscale hafnia films under varying oxygen partial pressure, C.Ko, M. Shandalov, P.C. McIntyre and S. Ramanathan, Applied Physics Letters, 97, 082102 (2010)
      • Three-terminal field effect devices utilizing thin film vanadium oxide as the channel layer, D. Ruzmetov, G. Gopalakrishnan, C. Ko, V. Naryanamurti and S. Ramanathan, Journal of Applied Physics, 114516 (2010)
      • Synthesis and characterization of one-dimensional flat ZnO nanotower arrays as high-efficiency adsorbent for the photocatalytic remediation of water pollutants, D. Da, S. T. Martin and S. Ramanathan, Nanoscale, 2, 2685 (2010)
      • On the role of ultra-thin oxide cathode synthesis on the functionality of micro-solid oxide fuel cells: Structure, stress engineering and in-situ observation of fuel cell membranes during operation, B.K. Lai, K. Kerman and S. Ramanathan, Journal of Power Sources, 195, 5185 (2010)
      • Nanoscale imaging and control of resistance switching in VO2 at room temperature, J. Kim, C. Ko, A. Franzel, S. Ramanathan and J.E. Hoffman, Applied Physics Letters, 96, 213106 (2010) (also selected for publication in Virtual Journal of Nanoscale Science and Technology, June 7, 2010 issue)
      • Compositional tuning of ultra-thin surface oxides on metal and alloy substrates using photons: dynamic simulations and experiments, C.L. Chang, S.K.R.S. Sankaranarayanan, D. Ruzmetov, E. Kaxiras and S. Ramanathan, Physical Review B, 81, 085406 (2010)
      • Thermal conductivity and dynamic heat capacity across the metal-insulator transition in thin film VO2, D. Oh, C. Ko, S. Ramanathan and D.G. Cahill, Applied Physics Letters, 96, 151906, 2010
      • Transmission electron microscopy studies on structure and defects in in crystalline yttria and lanthanum oxide thin films grown on single crystal sapphire by molecular beam synthesis, M. Tsuchiya, N. Bojarczuk, S. Guha and S. Ramanathan, Philosophical Magazine, 90, 1123 (2010)
      • Photo-excitation enhanced high temperature conductivity and crystallization kinetics in ultra-thin La0.6Sr0.4Co0.8Fe0.2O3-d films, T. Cain, B.K. Lai, S.K.R.S. Sankaranarayanan and S. Ramanathan, Journal of Power Sources, 195, 3145 (2010)
      • Limits on vanadium oxide Mott metal-insulator transition field effect transistors, S. Hormoz and S. Ramanathan, Solid State Electronics, 54, 654, 2010
      • In-situ X-ray diffraction studies on epitaxial VO2 films grown on c-Al2O3 during thermally induced metal-insulator transition, K. Okimura, J. Sakai and S. Ramanathan, Journal of Applied Physics, 107, 063503 (2010)
      • Electric field control of surface oxygen dynamics and its effect on the atomic scale structure and morphology of a growing ultra-thin oxide film, S.K.R.S. Sankaranarayanan and S. Ramanathan,Journal of Physical Chemistry C, 114, 6631, 2010
      • Fabrication and electrochemical performance of thin film solid oxide fuel cells with large area nanostructured membranes, A. C. Johnson, A. Baclig, D. Harburg, B.K. Lai and S. Ramanathan,Journal of Power Sources, 195, 1149 (2010)
      • Electrical triggering of the metal-insulator transition in nanoscale vanadium oxide junctions, D. Ruzmetov, G. Gopalakrishnan, J. Deng, V. Narayanamurti and S. Ramanathan, Journal of Applied Physics, 106, 083702 (2009)
      • Photon-assisted synthesis of ultra-thin yttria-zoped zirconia membranes: Structure, variable temperature conductivity and micro-fuel cell devices, M. Tsuchiya, B.K. Lai, A.C.Johnson and S. Ramanathan, Journal of Power Sources, 195, 994 (2010)
      • Electric field tuning of oxygen stoichiometry at oxide surfaces: molecular dynamics simulations studies on zirconia, S.K.R.S. Sankaranarayanan, E. Kaxiras and S. Ramanathan, Energy and Environmental Science, 2, 1196 (2009)
      • Microstructural effects on electrical conductivity relaxation in nanoscale ceria thin films, M. Tsuchiya, N. Bojarczuk, S. Guha and S. Ramanathan, Journal of Chemical Physics, 130, 174711 (2009)
      • Interface-mediated ultra-fast carrier conduction in oxide thin films and superlattices for energy, S. Ramanathan, Journal of Vacuum Science and Technology A, 27, 1126 (2009) (critical review) , also selected for publication in Virtual Journal of Ultrafast Science, August 2009 issue
      • Low temperature electrochemical characterization of dense ultra-thin La0.6Sr0.4Co0.8Fe0.2O3 cathodes synthesized by RF-sputtering on nano-porous alumina supported yttria-doped zirconia membranes, H. Xiong, B. K. Lai, A.C. Johnson and S. Ramanathan, Journal of Power Sources, 193, 589, 2009
      • Photon-assisted oxidation and oxide synthesis: A review, M. Tsuchiya, K.R.S.S. Sankaranarayanan and S. Ramanathan, Progress in Materials Science, 54, 981 (2009)
      • Dispersive capacitance and conductance in thin film vanadium oxide devices, C. Ko and S. Ramanathan, Journal of Applied Physics, 106, 034101 (2009)
      • Transference numbers for in-plane carrier conduction in thin film nanostructured gadolinia-doped ceria under varying oxygen partial pressures, A. Podpirka and S. Ramanathan, Journal of the American Ceramic Society, 92, 2400 (2009)
      • Microstructure and microfabrication considerations for self-supported on-chip ultra-thin micro solid oxide fuel cell membranes, B. K. Lai, H. Xiong, A. C. Johnson, M. Tsuchiya and S. Ramanathan,Fuel Cells, 9, 699 (2009)
      • On the relationship between non-stoichiometry and passivity breakdown in ultra-thin oxides: Combined depth-dependent spectroscopy, Mott-Schottky analysis and molecular dynamics simulations studies, C. L. Chang, K. R. S. S. Sankaranarayanan, M. Engelhard, V. Shutthanandan and S. Ramanathan, Journal of Physical Chemistry C, 119, 3502 (2009)
      • Atomistic simulations of field enhanced oxidation of Al (100) beyond the Mott potential, S. K.R. S. Sankaranarayanan, E. Kaxiras and S. Ramanathan, Physical Review Letters, 102, 095504 (2009)
      • Carrier density and magneto-resistance measurements on vanadium oxide thin films across the phase transition boundary, D. Ruzmetov, D. Heiman, B. Claflin, V. Narayanamurti and S. Ramanathan, Physical Review B, 75, 153107 (2009)
      • Synthesis and variable temperature electrical conductivity studies highly ordered TiO2 nanotubes, R. Asmatulu, A. Karthiekyan, D. Bell, S. Ramanathan, M. J. Aziz, Journal of Materials Science, 44, 4613 (2009)
      • On the triggering mechanism for the metal-insulator transition in thin film vanadium oxide devices: Electric field versus thermal effects, G. Gopalakrishnan, D. Ruzmetov and S. Ramanathan, Journal of Materials Science, 44, 5345 (2009) (special issue on oxides)
      • A post-growth processing methodology to achieve barium strontium titanate thin films with low dielectric loss and high tunability for reconfigurable tunable devices, M. W. Cole, A. Podpirka and S. Ramanathan, Journal of Materials Science, 44, 5332 (2009) (special issue on oxides)
      • Correlation between metal-insulator transition characteristics and electronic structure changes in vanadium oxide thin films, D. Ruzmetov, S. D. Senanayake, V. Narayanamurti and S. Ramanathan,Physical Review B, 77, 195442 (2008)
      • Direct measurement of oxygen incorporation into thin film oxides at room temperature under photon irradiation, M. Tsuchiya, V. Shutthandan, M. Engelhard and S. Ramanathan, Applied Physics Letters, 93, 263109 (2008)
      • Observation of electric field-assisted phase transition in vanadium oxide thin films in a metal-oxide-semiconductor device geometry, C. Ko and S. Ramanathan, Applied Physics Letters, 93, 252101 (2008)
      • An experimental investigation into micro-fabricated fuel cells utilizing ultra-thin LaSrCoFeO3 cathodes and yttria-doped zirconia electrolyte films, A.C. Johnson, B.K. Lai, H. Xiong and S. Ramanathan, Journal of Power Sources, 186, 252 (2009)
      • Ultra-thin nanocrystalline Lanthanum Strontium Cobalt Ferrite thin films synthesis by RF-sputtering and temperature-dependent conductivity studies, B. Lai, A. C. Johnson, H. Xiong and S. Ramanathan, Journal of Power Sources, 186, 115 (2009)
      • Infra-red reflectance and photoemission spectroscopy studies across the phase transition boundary in thin film vanadium oxide, D. Ruzmetov, K. Zawilski, S.D. Senanayake, V. Narayanamurti and S. Ramanathan, Journal of Physics: Condensed Matter, 20, 465204 (2008)
      • Temperature-dependent interfacial carrier transport in low-dimensional oxides using ionic conductor-insulator (YSZ-SiO2) superlattices, A. Karthikeyan and S. Ramanathan, Journal of Applied Physics, 104, 124314 (2008)
      • On the low temperature oxidation and ultra-thin oxide growth on Zr in the presence of atomic oxygen: A modeling study, S. K.R. S. Sankaranarayan and S. Ramanathan, Journal of Physical Chemistry C , 112, 17877 (2008)
      • Apatite-phase synthesis from interdiffusion in doped CeO2-SiO2 thin film superlattices and in-situ conductivity studies, A. Karthikeyan, M. Tsuchiya and S. Ramanathan, Electrochemical and Solid State Letters, 11, K101 (2008)
      • Stability of electrical switching in thin film vanadium oxide upon multiple thermal cycling across the phase transition boundary, C. Ko and S. Ramanathan, Journal of Applied Physics, 104, 086105 (2008)
      • Superior nanoscale passive oxide layers synthesized under photon irradiation for environmental protection, C. L. Chang, M. Engelhard and S. Ramanathan, Applied Physics Letters, 92, 263103 (2008)
      • Enhanced grain growth under photon irradiation in yttria-doped zirconia thin film structures, M. Tsuchiya and S. Ramanathan, Philosophical Magazine Letters, 88, 583 (2008)
      • Molecular dynamics simulations study on nanoscale passive oxide growth on Ni-Al alloy surfaces at low temperatures, S. K. R. S. Sankaranarayan and S. Ramanathan, Physical Review B, 78, 085420 (2008)
      • Synthesis of nitrogen passivated rare-earth doped hafnia thin films and high temperature electrochemical conductivtiy studies, S. Ramanathan, A. Karthikeyan, S. A. Govindarajan and P. Kirsch, Journal of Vacuum Science and Technology B, 26, L33 (2008)
      • An investigation into photon irradiation induced structural and interfacial phenomena in pure and alio-valently doped zirconia thin films, M. Tsuchiya and S. Ramanathan, Philosophical Magazine, 88, 2519 (2008)
      • Effect of photon irradiation on the structural, insulating and dielectric properties of (Ba,Sr)TiO3 films, A. Podpirka, M. W. Cole and S. Ramanathan, Applied Physics Letters, 92, 212906 (2008)
      • Oxygen surface exchange studies in Gd-doped ceria thin films, A. Karthikeyan and S. Ramanathan,Applied Physics Letters, 92, 243109 (2008)
      • Effect of ultra-violet irradiation on the electrical resistance and phase transition characteristics of thin film vanadium oxide, C. Ko and S. Ramanathan, Journal of Applied Physics, 103, 106104 (2008)
      • Synthesis and interfacial phenomena in ultra-thin ytrria-doped zirconia films grown by alloy oxidation under photon irradiation, M. Tsuchiya and S. Ramanathan, Applied Physics Letters, 92, 033107 (2008)
      • X-ray absorption spectroscopy studies of vanadium oxide thin films across the phase transition boundary, D. Ruzmetov, S. Senanayake and S. Ramanathan, Physical Review B, 75, 195102 (2007)
      • Effect of photon irradiation on structure of yttria-doped zirconia thin films grown on semiconductor substrates, M. Tsuchiya and S. Ramanathan, Applied Physics Letters, 91, 253104 (2007)
      • Molecular beam synthesis and high temperature electrical characterization of crystalline ceria thin films, M. Tsuchiya, N. Bojarczuk and S. Ramanathan, Applied Physics Letters, 91, 223101 (2007)
      • Structure-functional property relationships in RF-sputtered vanadium oxide thin films, D. Ruzmetov, K. Zawilski, V. Narayanamurti and S. Ramanathan, Journal of Applied Physics, 102, 113715 (2007)
      • Effect of intrinsic stress from a nanoscale high-dielectric constant gate oxide on carrier transport in a semiconductor channel, H.T. Wang and S. Ramanathan, Applied Physics Letters, 91, 012106 (2007); also selected for publication in Virtual Journal of Nanoscale Science and Technology, July 16, 2007 issue
      • Observation of uniform temperature dependence in the electrical resistance across the structural phase transition in thin film vanadium oxide, R. Mani and S. Ramanathan, Applied Physics Letters, 91, 062104 (2007)
      • Atomic layer deposition of Y2O3/ZrO2 nanolaminates: a route to ultra-thin solid-state electrolyte membranes, C.N. Ginestra, R. Sreenivasan, A. Karthikeyan, S. Ramanathan and P.C. McIntyre,Electrochemical and Solid State Letters, 10, B161 (2007), also selected for publication in Virtual Journal of Nanoscale Science and Technology, August 6, 2007 issue
      • Size-dependent phase transformations in nanoscale pure and Y-doped zirconia thin films, M. Tsuchiya, A. M. Minor and S. Ramanathan, Philosophical Magazine, 87, 5673 (2007)
      • Studies on structure-electrochemical conduction relationships in doped-zirconia thin films, A. Karthikeyan, M. Tsuchiya and S. Ramanathan, Solid State Ionics, 179, 1234 (2008) (SSI-16 special issue)
      • A theoretical approach to investigate nanoscale oxidation of metal surfaces under ultra-violet irradiation , C.L. Chang and S. Ramanathan, Journal of the Electrochemical Society, 154, G160 (2007)
      • Tunable conductivity in nanoscale Gd-doped ceria thin films, A. Karthikeyan, M. Tsuchiya, C.L. Chang and S. Ramanathan, Applied Physics Letters, 90, 263108 (2007)
      • Higher permittivity rare earth doped hafnium oxide for sub-45nm Metal-Insulator-Semiconductor devices, S. Govindarajan, T. S. Böscke, P. Sivasubramani, U. Schröder, S. Ramanathan, P.D. Kirsch, B. E. Gnade, B.H. Lee, H.-H. Tseng, R. Jammy, Applied Physics Letters, 91, 062906 ( 2007)
      • In-situ ion scattering and X-ray photoelectron spectroscopy studies of stability and nanoscale oxidation of single crystal (100) InAs, C.L. Chang, V. Shutthanandan, S.C. Singhal and S. Ramanathan, Applied Physics Letters, 90, 203109 (2007)
      • Effect of photon irradiation on conductivity of nanoscale yttria-doped zirconia thin films, A. Karthikeyan and S. Ramanathan, Applied Physics Letters, 90, 093107 (2007)
      • High temperature conductivity studies of nanoscale yttria-doped zirconia films and size effects, A. Karthikeyan, C.L. Chang and S. Ramanathan, Applied Physics Letters, 89, 183116 (2006)
      • High-resolution non-invasive picosecond ultrasonic microscopy of buried interfaces, S. Ramanathan and D. G. Cahill, Journal of Materials Research: Rapid Communications, 21, 1204 (2006) 70.
      • Three-dimensional wafer stacking via Cu-Cu bonding integrated with 65 nm strained Si/low-k CMOS tchnology, P. Morrow, C. M. Park, S. Ramanathan, M. Kobrinsky and M. Harmes, IEEE Electron Device Letters, 27, 335 (2006)
      • Non-destructive high-resolution characterization of buried interfaces for advanced interconnect and packaging architectures: experiments and modeling; S. Ramanathan, C. Hu, E. Pickett, P. Morrow, Y. Liu and R. Dias, Microelectronic Engineering, 82, 84 (2005)
      • Advanced fault isolation and failure analysis techniques for future package technologies, M. Pacheco, Z. Wang, L. Skoglund, Y. Liu, A. Medina, A. Raman, R. Dias, D. Goyal and S. Ramanathan, Intel Technology Journal, 9, 337 (2005)
      • Solid-state refrigeration for cooling microprocessors, S. Ramanathan and G. Chrysler, IEEE Transactions on Components, Packaging and Manufacturing Technologies, 29, 179 (2006)
      • Charge-trapping studies in ZrO2 and HfO2 gate dielectrics grown by ultra-violet ozone oxidation, S. Ramanathan, P.C. McIntyre, S. Guha and E.P. Gusev, Applied Physics Letters, 84, 389 (2004)
      • Ultra-violet ozone oxidation of metal films, S. Ramanathan, D. Chi, P.C. McIntyre, C.J. Wetteland and J.R. Tesmer, Journal of Electrochemical Society, 150, F110 (2003).
      • Phase separation in hafnium silicates for alternative gate dielectrics, S. Ramanathan, P. C. McIntyre, J. Luning, P.S. Lysaght, Y. Yang, Z. Chen and S. Stemmer, Journal of Electrochemical Society, 150, F173 (2003)
      • Germanium MOS capacitors incorporating ultra-thin high-k dielectric, C.O. Chui, S. Ramanathan, B. Triplett, P.C. McIntyre and K.C. Saraswat, IEEE Electron Device Letters, 23, 473 (2002).
      • Structural studies on zirconia dielectrics, S. Ramanathan, P.C. McIntyre, J. Luning, P. Pianetta and D.A. Muller, Philosophical Magazine Letters, 82, 519 (2002).
      • Ultra-thin zirconia / SiO2 dielectric stacks grown by ultra-violet ozone oxidation, S. Ramanathan and P.C. McIntyre, Applied Physics Letters, 80, 3793 (2002).
      • Electrical properties of ultrathin zirconia films grown by UV ozone oxidation, S. Ramanathan, C.M. Park and P.C. McIntyre, Journal of Applied Physics, 91, 4521-4527 (2002).
      • Growth and characterization of ultra-thin zirconia dielectrics grown by UV-ozone oxidation, S. Ramanathan, G.D. Wilk, D.A. Muller, C.M. Park and P.C. McIntyre, Applied Physics Letters, 79, 2621-2623 (2001).
      • Effect of oxygen stoichiometry on electrical properties of zirconia dielectrics, S. Ramanathan, D.A. Muller, G. Wilk, C.M. Park and P.C. McIntyre, Applied Physics Letters, 79, 3311-3313 (2001).
      • Microstructural study of epitaxial Pt films and permalloy / Pt films on (0001) Sapphire, S. Ramanathan, B.M. Clemens, P.C. McIntyre and U. Dahmen, Philosophical Magazine A, 81, 2073-2094 (2001).
      • Effects of deposition and annealing conditions on the structure and electrical properties of LPCVD silicon thin films, S. Das, S. Ramanathan, P.R.S. Rao and K.N. Bhat, Journal of Materials Science, 35, 4743-4746 (2000).
      • On the growth of BSCCO whiskers, S. Ramanathan, Z. Li and K. Ravichandar, Physica C, 289, 192 (1997)

Archival / Extended Conference Proceedings Papers

      • Nanostructured anodes for direct methane thin film solid oxide fuel cells, Y. Takagi, S. Adam and S. Ramanathan, ECS Transactions, 45, 337 (2012)
      • Vanadium oxide (VO2) is also a ferroelectric: Properties from memory structures, S.H. Lee, M.K. Kim, J.W. Lee, Z. Yang, S. Ramanathan and S. Tiwari, Tech. Dig. IEEE Nano, p. 735 (2011)
      • A new single element phase transition memory, M. Kim, S.H. Lee, C. Ko, S. Ramanathan, J.W. Lee and S. Tiwari, Tech. Dig. IEEE Nano, p. 439, 2010
      • Towards wafer scale fabrication and 3-D integration of micro-solid oxide fuel cells for portable energy, B.K. Lai, A.C. Johnson, M. Tsuchiya and S. Ramanathan, Proceedings of SPIE, 7679, 767916 (2010)
      • Photon effects in ultra-thin oxide films: Synthesis and Functional Properties, S. Ramanathan, M. Tscuhiya, C. Ko and C.L. Chang, Ceramic Transactions, 203, 143 (2009)
      • Effect of rare-earth doping and nitrogen passivation treatments on properties of ultra-thin hafnia films, S. Ramanathan, A. Karthikeyan, S. A. Govindarajan and P. Kirsch, Electrochemical Society Transactions, 16, 497 (2008)
      • Synthesis and phase stability in ultra-thin solid electrolytes: The case of zirconia thin films, M. Tsuchiya, A. M. Minor and S. Ramanathan, Electrochemical Society Transactions, in press (2008)
      • On the stability and oxidation of single crystal (100) InAs Surfaces, C.L. Chang, V. Shutthandan, S.C. Singhal and S. Ramanathan, Electrochemical Society Transactions, Physics and Technology of High-k Gate Dielectrics V, 11 (4), 409 (2007)
      • Higher permittivity rare-earth doped HfO2 and ZrO2 for logic and memory applications, S. Govindarajan, T. S. Boscke, P. Kirsch, M. A. Quevedo-Lopez, P. Sivasubramani, S. C. Song, R.M. Wallace, B. Gnade, P. Y. Hung, J. Price, U. Schroder, S. Ramanathan, B. H. Lee, R. Jammy,Proceedings of Technical Papers, International Symposium on VLSI Technology, Systems and Applications, 44-45 (2007)
      • Ultra-thin Y-doped zirconia membranes synthesized under photon irradiation: Structure evolution and high temperature electrochemical transport studies, M. Tsuchiya and S. Ramanathan,Electrochemical Society Transactions, 11, 9 (2008)
      • Theoretical investigation of on-chip sub-ambient microprocessor cooling, A. Jain and S. Ramanathan, Proceedings of ITHERM, 765-770 (2006)
      • In-situ studies on stoichiometry and structure of thin film yttria-stabilized zirconia under thermal processing, C.L. Chang, V. Shutthanandan, S.C. Singhal and S. Ramanathan, Mater. Res. Soc. Symp. Proc. 1023-JJ01-07(2007)
      • Electrical study of device arrays on thin film vanadium oxide, R. G. Mani, S. Ramanathan, and V. Narayanamurti, Mater. Res. Soc. Symp. Proc. 0966-T10-18 (2007)
      • Non-invasive high-resolution acoustic microscopy technique using embedded nanostructures, D. Wulin and S. Ramanathan, Mater. Res. Soc. Symp. Proc. 1019-FF06-02 (2007)
      • Theoretical analysis of thermal conductivitiy in amorphous inter-layer dielectrics, M. Shamsa, P. Morrow and S. Ramanathan, Mater. Res. Soc. Symp. Proc., 914, F03-01 (2006)
      • High-frequency acoustic microscopy studies of buried interfaces in silicon, S. Ramanathan, J. E. Semmens and L. W. Kessler, Proceedings of ECTC, 1865-1868 (2006)

Books

Book Chapters

      • Correlated Electrons: A platform for solid state devices, S. D. Ha, Y. Zhou, R. Jaramillo and S. Ramanathan, Future Trends in Microelectronics: Into the cross currents, Wiley, NY, (Eds. S. Luryi, J. M. Xu and A. Zaslavsky) to appear, 2013
      • Exploratory studies on silicon-based oxide fuel cell power sources incorporating ultra-thin nanostructured platinum and cerium oxide films as anode components, B.K. Lai, A.C. Johnson, H. Xiong, C. Ko and S. Ramanathan, Future Trends in Microelectronics: From Nanophotonics to Sensors and Energy , Wiley-IEEE Press, (Ed. A Zaslavsky, J. Xu and S. Luryi) 411, 2010
      • Metal-insulator transition in vanadium oxide thin films, D. Ruzmetov and S. Ramanathan, Thin Film Metal-Oxides (Ed. S. Ramanathan), Springer-Verlag, 2010

Other Publications

      • Exploring chemical and structural complexity of novel ion conductors, R. Merkle, J.T.S. Irvine, P. Knauth and S. Ramanathan, Solid State Ionics Preface (Special Issue, E-MRS Meeting, Strasbourg, France), 1, 184 (2011)
      • Materials and Devices for End-of-Roadmap and Beyond CMOS Scaling, edited by S. Ramanathan, S. Guha, J. Mannhart, A.C. Kummel, H. Watanabe, I. Thayne, P. Majhi, Mater. Res. Soc. Symp. Proc. Volume 1252, 2010
      • Materials and Devices for Beyond CMOS Scaling, edited by S. Ramanathan, Mater. Res. Soc. Symp. Proc. Volume 1067E, Warrendale, PA, 2008
      • Towards low temperature solid oxide fuel cells, A.C. Johnson and S. Ramanathan, World Ecology Report, XIX, 2 (2007)

Ph.D. Dissertation

      • Studies on Synthesis, Structural and Electronic Properties of Complex Oxide Thin Films: Ba1-xSrxTiO3 and La2-xSrxNiO4, Adrian Podpirka, Harvard University, 2012
      • Structure-functional property relationships in thin film vanadium oxide, Changhyun Ko, Harvard University, 2011
      • On the relationship between non-stoichiometry and passivity breakdown in ultra-thin oxides formed on Al and Al-alloy surfaces, Chia-Lin Chang, Harvard University, 2010
      • Studies on sub-100nm Fluorite-Derivative Oxide Films: Structural Evolution, Electrical Properties and Photon Effects, Masaru Tsuchiya, Harvard University, 2009