Associate Professor of Mechanical Engineering and Materials Science
Olivier Delaire's research program investigates atomistic transport processes of energy and charge, and thermodynamics in energy materials (DOE Early Career Award 2014). His research group studies elementary excitations in condensed-matter systems (phonons, electrons, spins), their couplings (phonon-phonon interaction, electron-phonon coupling, spin-phonon coupling), and their effects on macroscopic material properties. Current materials of interest include thermoelectrics, ferroelectrics/multiferroics, spin-caloritronics, and photovoltaics. We develop new methods to reveal microscopic underpinnings of thermal transport, by integrating neutron and x-ray scattering measurements with quantum-mechanical computer simulations. This combined experimental and computational approach opens a new window to understand and control microscopic energy transport for the design of materials with novel properties (thermoelectrics, spin-caloritronics), and to rationalize multiferroics and metal-insulator transitions. In addition to state-of-the-art scattering experiments and first-principles simulations, our team also uses transport measurements, optical spectroscopy, materials synthesis, calorimetry, and thermal characterization, with the goal of gaining deeper atomistic understanding for developing future materials.
Bansal, D, Niedziela, JL, Sinclair, R, Garlea, VO, Abernathy, DL, Chi, S, Ren, Y, Zhou, H, and Delaire, O. "Momentum-resolved observations of the phonon instability driving geometric improper ferroelectricity in yttrium manganite(Accepted)." Nature Communications 9.1 (December 1, 2018). Full Text Open Access Copy
Wall, S, Yang, S, Vidas, L, Chollet, M, Glownia, JM, Kozina, M, Katayama, T, Henighan, T, Jiang, M, Miller, TA, Reis, DA, Boatner, LA, Delaire, O, and Trigo, M. "Ultrafast disordering of vanadium dimers in photoexcited VO2." Science (New York, N.Y.) 362.6414 (November 2018): 572-576. Full Text
Krauskopf, T, Muy, S, Culver, SP, Ohno, S, Delaire, O, Shao-Horn, Y, and Zeier, WG. "Comparing the Descriptors for Investigating the Influence of Lattice Dynamics on Ionic Transport Using the Superionic Conductor Na3PS4- xSe x." Journal of the American Chemical Society 140.43 (October 17, 2018): 14464-14473. Full Text
Mao, J, Niedziela, JL, Wang, Y, Xia, Y, Ge, B, Liu, Z, Zhou, J, Ren, Z, Liu, W, Chan, MKY, Chen, G, Delaire, O, Zhang, Q, and Ren, Z. "Self-compensation induced vacancies for significant phonon scattering in InSb." Nano Energy 48 (June 2018): 189-196. Full Text
Zevalkink, A, Smiadak, DM, Blackburn, JL, Ferguson, AJ, Chabinyc, ML, Delaire, O, Wang, J, Kovnir, K, Martin, J, Schelhas, LT, Sparks, TD, Kang, SD, Dylla, MT, Snyder, GJ, Ortiz, BR, and Toberer, ES. "A practical field guide to thermoelectrics: Fundamentals, synthesis, and characterization." Applied Physics Reviews 5.2 (June 2018): 021303-021303. Full Text
Liu, K, Lee, S, Yang, S, Delaire, O, and Wu, J. "Recent progresses on physics and applications of vanadium dioxide." Materials Today (April 2018). Full Text
Jain, P, Bansal, D, Sharma, G, Bhattacharya, A, Ingale, B, Delaire, O, and Chatterjee, R. "Observation of low temperature metastable states in complex CaMn7O12." Journal of Physics. Condensed Matter : an Institute of Physics Journal (January 4, 2018). Full Text
Muy, S, Bachman, JC, Giordano, L, Chang, H-H, Abernathy, DL, Bansal, D, Delaire, O, Hori, S, Kanno, R, Maglia, F, Lupart, S, Lamp, P, and Shao-Horn, Y. "Tuning mobility and stability of lithium ion conductors based on lattice dynamics." Energy & Environmental Science 11.4 (2018): 850-859. Full Text
Niedziela, JL, Bansal, D, May, AF, Ding, J, Lanigan-Atkins, T, Ehlers, G, Abernathy, DL, Said, A, and Delaire, O. "Selective breakdown of phonon quasiparticles across superionic transition in CuCrSe2(Accepted)." Nature Physics (January 1, 2018). Full Text
Luo, C, Bansal, D, Li, J, Viehland, D, Winn, B, Ren, Y, Li, X, Luo, H, and Delaire, O. "Neutron and x-ray scattering study of phonon dispersion and diffuse scattering in single crystals near the morphotropic phase boundary." Physical Review B 96.17 (November 2017). Full Text
Borreguero, JM, Campbell, SI, Delaire, OA, Doucet, M, Goswami, M, Hagen, ME, Lynch, VE, Proffen, TE, Ren, S, Savici, AT, and Sumpter, BG. "Integrating advanced materials simulation techniques into an automated data analysis workflow at the spallation neutron source." January 1, 2014.
Delaire, O, Swan-Wood, T, and Fultz, B. "Vibrational thermodynamics of vanadium and dilute vanadium alloys." December 1, 2005.
Delaire, O, Kresch, M, and Fultz, B. "Entropy of the γ- α martensitic transformation in Fe 71Ni29." December 1, 2005.
Delaire, O, Kresch, M, and Miltz, B. "Entropy of the gamma-alpha martensitic transformation in Fe71Ni29." 2005.
Manley, ME, McQueeney, RJ, Fultz, B, Swan-Wood, T, Delaire, O, Goremychkin, EA, Cooley, JC, Hults, WL, Lashley, JC, Osborn, R, and Smith, JL. "The importance of high temperature electron-phonon coupling to the thermodynamic properties of Ce0.9Th0.1 and other f-electron bonded metals." 2004.
Motta, AT, Erwin, KT, Delaire, O, Birtcher, RC, Chu, Y, Maser, J, Mancini, DC, and Lai, B. "Synchrotron radiation study of secondphase particles and alloying elements in zirconium alloys." January 1, 2002.
Muy, S, Bachman, J, Giordano, L, Abernathy, D, Bansal, D, Delaire, O, Kanno, R, Maglia, F, Lupart, S, and Shao-Horn, Y. "Mobility and stability descriptors of lithium ion conductors based on lattice dynamics." 255th National Meeting and Exposition of the American-Chemical-Society (ACS) - Nexus of Food, Energy, and Water. March 18, 2018 - March 22, 2018. New Orleans, LA.: AMER CHEMICAL SOC, March 18, 2018.