Selected Archival Publications
2018
  • Beyond electrostatic modification: design and discovery of functional oxide phases by ionic-electronic doping, H. T. Zhang, Z. Zhang, H. Zhou, H. Tanaka, D. D. Fong and S. Ramanathan, Advances in Physics X, Article: 1523686 (2018)
  • Vanadium dioxide circuits emulate neurological disorders, J. Lin, S. Guha and S. Ramanathan, Frontiers in Neuroscience (in press, 2018) https://arxiv.org/abs/1808.08820
  • Strongly correlated perovskite lithium ion shuttles, Y. Sun, M. Kotiuga, D. Lim, B. Narayanan, M. Cherukara, Z. Zhang, Y. Dong, R. Kou, C. J. Sun, Q. Lu, I. Waluyo, A. Hunt, H. Tanaka, A. N. Hattori, S. Gamage, Y/ Abate, V. G. Pol, H. Zhou, S. K. R. S. Sankaranarayanan, B. Yildiz, K. M. Rabe, and S. Ramanathan, Proceedings of the National Academy of Sciences of the USA, 115, 9672 (2018)
  • Proton-doped strongly correlated perovskite nickelate memory devices, K. Ramadoss, F. Zuo, Y. Sun, Z. Zhang, J. Lin, U. Bhaskar, S. Shin, M. A. Alam, S. Guha, D. Weinstein and S. Ramanathan, arXiv:1805.00527, IEEE Electron Device Letters 39, 1500 (2018)
  • Electrically-Driven Insulator-Metal Transition Based Devices, Part II: Transient Characteristics, J. Lin, S. Ramanathan and S. Guha, IEEE Transactions on Electron Devices 65, 3989 (2018)
  • Electrically-Driven Insulator-Metal Transition Based Devices, Part I: Electrothermal model and experimental analysis for DC Experimental Characteristics, J. Lin, S. Ramanathan and S. Guha, IEEE Transactions on Electron Devices 65, 3982 (2018)
  • Quantum materials for brain sciences and artificial intelligence, S. Ramanathan, MRS Bulletin, 43, 534 (2018)
  • Thermally tunable VO2-SiO2 nanocomposite thin-film capacitors, Y. Sun, K.V.L.V. Narayanachari, C. Wan, X. Sun, H. Wang, K. A. Cooley, S. E. Mohney, D. White, A. Duwel, M. A. Kats and S. Ramanathan, Journal of Applied Physics, 123, 114103 (2018)
  • A self-consistent, semi-classical electro-thermal modeling framework for Mott devices, K. Karda, C. Mouli, S. Ramanathan and M. A. Alam, IEEE Transactions on Electron Devices 65, 1672 (2018)
  • Limiting optical diodes enabled by the phase transition of vanadium dioxide, C. Wan, E. Horak, J. King, J. Salman, Z. Zhang, Y. Zhou, P. Roney, B. Gundlach, S. Ramanathan, R. Goldsmith and M. A. Kats, ACS Photonics, 5, 2688 (2018)
  • Radiative thermal runaway due to negative differential thermal emission across a solid-solid phase transition, D. M. Bierman, A. Lenert, M. A. Kats, Y. Zhou, S. Zhang, M. Ossa, S. Ramanathan, F. Capasso and E. N. Wang, Physical Review Applied 10, 021001 (2018) Editor’s Suggestion
  • Perovskite nickelates as electric-field sensors in salt water, Z. Zhang, D. Schwanz, B. Narayanan, M. Kotiuga, J. A. Dura, M. Cherukara, H. Zhou, J. W. Freeland, J. Li, R. Sutarto, F. He, C. Wu, J. Zhu, Y. Sun, K. Ramadoss, S. Nonnenmann, N. Yu, R. Comin, K. M. Rabe, S. K. R. S. Sankaranarayanan and S. Ramanathan, Nature, 553, 68 (2018)
2017
  • Functional materials at the flick of a switch, S. Ramanathan, Nature, 546, 40 (2017)
  • Epsilon-near-zero substrate engineering for ultrathin-film perfect absorbers, J. Rensberg Y. Zhou, S. Richter, C. Wan, S. Zhang, P. Schoppe, R. Schmidt-Grund, S. Ramanathan, F. Capasso, M. A. Kats and C. Ronning, Physical Review Applied, 8, 014009 (2017)
  • Habituation based synaptic plasticity and organismic learning in a quantum perovskite, F. Zuo, P. Panda, M. Kotiuga, J. Li, M. Kang, C. Mazzoli, H. Zhou, A. Barbour, S. Wilkins, B. Narayanan, M. Cherukara, Z. Zhang, S. K. R. S. Sankaranarayanan, R. Comin, K. M. Rabe, K. Roy and S. Ramanathan, Nature Communications, 8, 240 (2017)
  • Flash transition as a possible origin for low open circuit voltage in thin film solid oxide fuel cells, R. Raj and S. Ramanathan, Journal of Power Sources, 359, 48 (2017)
  • Preface: Ionotronics, D. D. Fong and S. Ramanathan, APL Materials, 5, 042201 (2017)
  • Evolution of metallicity in vanadium dioxide by creation of oxygen vacancies, Z. Zhang, F. Zuo, C. Wan, A. Dutta, J. Kim, J. Rensberg, R. Nawrodt, H. H. Park, T. Larrabee, X. Guan, Y. Zhou, S. M. Prokes, C. Ronning, V. M. Shalaev, A. Boltasseva, M. A. Kats, and S. Ramanathan, Physical Review Applied, 7, 034008 (2017)
2016
  • Using atom probe tomography to understand ZnO:Al/SiO2/Si Schottky diodes, R. Jaramillo, A. Youseff, A. Akey, F. Schoofs. S. Ramanathan and T. Buonassisi, Physical Review Applied, 6, 034016 (2016)
  • Chemical and radiation stability of ionic liquids: A computational screening study, N. Ilawe, S. Ramanathan, B. M. Wong and J. Wu, Journal of Physical Chemistry C, 120, 27757 (2016)
  • Sign reversal of magnetoresistance in a perovskite nickelate by electron doping, K. Ramadoss, N. Mandal, X. Dai, Z. Wan, Y. Zhou, L. Rokhinson, Y. P. Chen, J. Hu, and S. Ramanathan, Physical Review B, 94, 235124 (2016)
  • Correlated perovskites as a new platform for super broadband tunable photonics, Z. Li, Y. Zhou, H. Qi, Q. Pan, Z. Zhang, N. N. Shi, M. Lu, A. Stein, C. Y. Li, S. Ramanathan and N. Yu, Advanced Materials, 28, 9117 (2016)
  • Experimental investigation into tungsten carbide thin films as solid oxide fuel cell anodes, J. Jiang, X. Guan, J. Lattimer, C. M. Friend, A. Verma, M. Tsuchiya and S. Ramanathan, Journal of Materials Research, 31, 3050 (2016)
  • Hydride-based solid oxide fuel cell-battery hybrid electrochemical system, X. Guan, J. Jiang, J. Lattimer, M. Tsuchiya, C. M. Friend and S. Ramanathan, Energy Technology, 5, 616 (2017)
  • Strongly correlated perovskite fuel cells, Y. Zhou, X. Guan, H. Zhou, K. Ramadoss, S. Adam, H. Liu, S. Lee, J. Shi, M. Tsuchiya, D. D. Fong and S. Ramanathan, Nature, 231, 534 (2016)
  • Thin film oxy-apatite anodes for solid oxide fuel cells, S. Lee, X. Guan and S. Ramanathan, Journal of the Electrochemical Society, 163, F719 (2016)
  • Active Optical Metasurfaces Based on Defect-Engineered Phase-Transition Materials, J. Rensberg, S. Zhang, Y. Zhou, A. S. McLeod, C. Schwarz, M. Goldflam, M. Liu, J. Kerbusch, R. Nawrodt, S. Ramanathan, D. N. Basov, F. Capasso, C. Ronning and M. A. Kats, Nano Letters, 16, 1050 (2016)
2015
  • Dynamic control of light emission faster than the lifetime limit using VO2 phase-change, S. Cueff, D. Li, Y. Zhou, F. J. Wong, J. A. Kurvits, S. Ramanathan and R. Zia, Nature Communications, 6, 8636 (2015)
  • Mott memory and neuromorphic devices, Y. Zhou and S. Ramanathan, Proceedings of the IEEE, 103, 1289 (2015)
  • Phase change materials for photonics, Z. Yang and S. Ramanathan, IEEE Photonics Journal, 7, 0700305 (2015)
  • Control of emergent properties at a correlated oxide interface with graphene, Y. Zhou, J. Park, J. Shi, M. Chhowalla, H. Park, D. A. Weitz and S. Ramanathan, Nano Letters, 15, 1627 (2015)
  • Reconfigurable anisotropy and functional transformations with VO2-based metamaterial electric circuits, S. Savo, Y. Zhou, G. Castaldi, M. Moccia, V. Galdi, S. Ramanathan and Y. Sato, Physical Review B, 91, 134105 (2015)
  • Strong correlations between structural order and passive state at water-oxide interfaces, B. Narayanan, S. A. Deshmukh, S. K. R. S. Sankaranarayanan and S. Ramanathan, Electrochimica Acta, 179, 386 (2015)
2014
  • Neuromimetic circuits with synaptic devices based on strongly correlated electron systems, S. D. Ha, J. Shi, Y. Meroz, L. Mahadevan and S. Ramanathan, Physical Review Applied, 2, 064003 (2014); Editor’s Suggestion, Physics Synopsis [link]
  • Thin film fuel cells with vanadium oxide anodes: strain and stoichiometry effects, Q. Van Overmeere and S. Ramanathan, Electrochimica Acta, 150, 83 (2014)
  • Orbital splitting and optical conductivity of the insulating phase of NbO2, F. J. Wong, N. Hong and S. Ramanathan, Physical Review B, 90, 115135 (2014)
  • Colossal resistance switching and band gap modulation in a perovskite nickelate by electron doping, J. Shi, Y. Zhou and S. Ramanathan, Nature Communications, 5, 4860 (2014)
  • Current-modulated optical properties of vanadium dioxide thin films in the phase transition region, S. Zhang, M. A. Kats, Y. Cui, Y. Zhou, Y. Yao, S. Ramanathan and F. Capasso, Applied Physics Letters, 105, 211104 (2014)
  • Strongly correlated electronic phase transition systems for cutting-edge microwave devices, S. D. Ha, Y. Zhou, A. E. Duwel, D. W. White and S. Ramanathan, IEEE Microwave Magazine, Sep-Oct, p. 32 (2014)
  • Origins of bad metal conductivity and insulator-metal transition in the rare-earth nickelates, R. Jaramillo, S. D. Ha, D. M. Silevitch and S. Ramanathan, Nature Physics, 10, 304 (2014)
  • Ultra-thin freestanding ceria membranes: layer transfer techniques and high temperature conductivity studies, J. S. Sim, J. Shi and S. Ramanathan, Journal of Materials Chemistry A, 2, 19019 (2014)
  • Conductivity noise study of the kinetics of the insulator-metal transition and phase co-existence in epitaxial samarium nickelate thin films, A. Sahoo, S. D. Ha, S. Ramanathan and A. Ghosh, Physical Review B, 90, 085116 (2014)
  • Abrupt insertion loss drop by RF-triggering of the phase transition in VO2 CPW switches, S. D. Ha, Y. Zhou, C. J. Fisher, S. Ramanathan and J. Treadway, IEEE Microwave and Wireless Components Letters, 24, 575 (2014)
  • Nonisostructural complex oxide heteroepitaxy, F. J. Wong and S. Ramanathan, Journal of Vacuum Science and Technology A, 32, 040801 (2014); critical review
  • Performance of solid oxide fuel cells approaching the two-dimensional limit, K. Kerman and S. Ramanathan, Journal of Applied Physics, 115, 174307 (2014)
  • Tunable hyperbolic metamaterials utilizing phase change heterostructures, H. N. S. Krishnamoorthy, Y. Zhou, S. Ramanathan, E. E. Narimanov and V. M. Menon, Applied Physics Letters, 104, 121101 (2014)
  • Professor Arthur Nowick Special Issue: Free standing yttria-doped zirconia membranes: Geomretical effects on stability, K. Kerman, S. Xuza and S. Ramanathan, Journal of Electroceramics, in press (2014)
2013
  • A correlated nickelate synaptic transistor, J. Shi, S. D. Ha, Y. Zhou, F. Schoofs and S. Ramanathan, Nature Communications, 4, 2676 (2013)
  • Monolithic integration of nanoscale solid oxide fuel cell membranes onto polymeric scaffolds through stress control, K. Kerman, Q. Van Overmeere, M. Karpelson, R. J. Wood and S. Ramanathan, ACS Nano, 7, 10895 (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, 38, 286 (2013)
  • Vanadium dioxide as a natural disordered metamaterial: Perfect thermal emission and large broadband negative differential thermal emittance, M. A. Kats, R. Blanchard, S. Zhang, P. Genevet, C. Ko, S. Ramanathan and F. Capasso, Physical Review X, 3, 041004 (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)
  • Chloride ions induce order-disorder transition at water-oxide interfaces, S. Deshmukh, G. Kamath, S. Ramanathan and S.K.R.S. Sankaranarayanan, Physical Review E, 88, 062119 (2013)
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)
  • Orientation dependent oxygen exchange kinetics on single crystal SrTiO3 surfaces, K. Kerman, C. Ko and S. Ramanathan, Physical Chemistry Chemical Physics, 14, 11953 (2012)
  • Energy storage in ultra-thin solid oxide fuel cells, Q. van Overmeere, K. Kerman and S. Ramanathan, Nano Letters, 12, 3756 (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)
2011
  • 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)
  • 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)
  • Oxide electronics utilizing ultrafast metal-insulator transitions, Z. Yang, C. Ko and S. Ramanathan, Annual Reviews of Materials Research, 41, 337 (2011)
  • Scalable nanostructured membranes for solid oxide fuel cells, M. Tsuchiya, B.K. Lai and S. Ramanathan, Nature Nanotechnology, 6, 282 (2011)
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
  • Limits on vanadium oxide Mott metal-insulator transition field effect transistors, S. Hormoz and S. Ramanathan, Solid State Electronics, 54, 654, 2010
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)
  • 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)
  • 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)
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)
2007
  • 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)
2006
  • 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)
2004
  • 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)
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)
2002
  • 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).
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).
Selected Conferences/Book Chapters
2018
  • MESOS, Discovering the deep blue sea: Research, Innovation and Social Engagement: Inter-disciplinary team summaries, Washington DC: The National Academies Press, 2018
2017
  • Physics and Technology of Electronic Insulator-to-Metal Transition (E-IMT) for High On/Off Ratio and Low Voltage in Device Applications, J. Lin, K. Alam, L. Ocola, Z. Zhang, S. Datta, S. Ramanathan, S. Guha, IEEE International Electron Devices Meeting, IEDM, 23.4.1 – 23.4.4 (2017)
2016
  • Low-voltage artificial neuron using feedback engineered insulator-to-metal-transition devices, Lin, J., Sonde, S., Chen, C., Stan, L., Achari, K.V.L.V., Ramanathan, S. and Guha, S., 2016, IEEE International Electron Devices Meeting (IEDM), 34.5.1. – 34.5.4 (2016)
2015
  • Electrical transport in transition metal oxides, F. J. Wong and S. Ramanathan, Resistive Switching: From Fundamentals of Nanionic Redox Processes to Memristive Device Applications, Wiley (ed. Waser and Ielmini)
2014
  • Develop innovative approaches to make special nuclear materials (SNMs) more easily monitored and more detectable if stolen, National Academies Keck Future Initiative: The Future of Advanced Nuclear Technologies: Interdisciplinary Team Summaries. Washington, DC: The National Academies Press, 2014
  • Computation and learning with emergent phases in correlated oxides, Y. Zhou, S. D. Ha and S. Ramanathan, CMOS and Beyond Logic Switches, Cambridge University Press, (Ed.s T. J. King-Liu and K. Kuhn), 2014
2013
  • Develop innovative curricula that will help students develop expertise in dealing with the information overload they will encounter during and after their schooling, National Academies Keck Future Initiative: The Informed Brain in a Digital World: Interdisciplinary Team Summaries. Washington, DC: The National Academies Press, 2013
Supervised PhD Dissertations
2016
  • Thin film complex oxide proton conductors: Synthesis and Applications, Suhare Adam, Harvard University, 2016
2015
  • Ultra-thin oxide membranes: synthesis and carrier transport, Jai Sim, Harvard University, 2015
  • Correlated oxides: Materials physics and devices, You Zhou, Harvard University, 2015
2014
  • Ultra-thin solid oxide fuel cells: materials and devices, Kian Kerman, Harvard University, 2014
2012
  • Studies on Synthesis, Structural and Electronic Properties of Complex Oxide Thin Films: Ba1-xSrxTiO3 and La2-xSrxNiO4, Adrian Podpirka, Harvard University, 2012
2011
  • Structure-functional property relationships in thin film vanadium oxide, Changhyun Ko, Harvard University, 2011
2010
  • 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
2009
  • Studies on sub-100nm Fluorite-Derivative Oxide Films: Structural Evolution, Electrical Properties and Photon Effects, Masaru Tsuchiya, Harvard University, 2009