Olivier Delaire

Olivier Delaire

Associate Professor of Physics


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.

Education & Training

  • Ph.D., California Institute of Technology 2006

  • M.Sc., Pennsylvania State University 2000

Selected Grants

Solid-State Solar Thermal Energy Conversion Center - Delaire Neutron Scattering awarded by Massachusetts Institute of Technology (Principal Investigator). 2016 to 2019

Joint Pratt - ORNL Work awarded by UT-Battelle, LLC (Principal Investigator). 2016 to 2017

Olivier Delaire Joint Pratt - ORNL Work awarded by UT-Battelle, LLC (Principal Investigator). 2016

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

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

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 (Na,Bi)Ti O3-xBaTi O3 single crystals near the morphotropic phase boundary." Physical Review B 96.17 (November 10, 2017). Full Text

Mukhopadhyay, S, Bansal, D, Delaire, O, Perrodin, D, Bourret-Courchesne, E, Singh, DJ, and Lindsay, L. "The curious case of cuprous chloride: Giant thermal resistance and anharmonic quasiparticle spectra driven by dispersion nesting." Physical Review B 96.10 (September 2017). Full Text

Berlijn, T, Snijders, PC, Delaire, O, Zhou, H-D, Maier, TA, Cao, H-B, Chi, S-X, Matsuda, M, Wang, Y, Koehler, MR, Kent, PRC, and Weitering, HH. "Itinerant Antiferromagnetism in RuO_{2}." Physical review letters 118.7 (February 15, 2017): 077201-. Full Text Open Access Copy

Bansal, D, Niedziela, JL, May, AF, Said, A, Ehlers, G, Abernathy, DL, Huq, A, Kirkham, M, Zhou, H, and Delaire, O. "Lattice dynamics and thermal transport in multiferroic." Physical Review B 95.5 (February 2017). Full Text

Lee, S, Hippalgaonkar, K, Yang, F, Hong, J, Ko, C, Suh, J, Liu, K, Wang, K, Urban, JJ, Zhang, X, Dames, C, Hartnoll, SA, Delaire, O, and Wu, J. "Anomalously low electronic thermal conductivity in metallic vanadium dioxide." Science (New York, N.Y.) 355.6323 (January 2017): 371-374. Full Text

Bao, F, Archibald, R, Niedziela, J, Bansal, D, and Delaire, O. "Complex optimization for big computational and experimental neutron datasets." Nanotechnology 27.48 (December 2, 2016): 484002-484002. Full Text

Chen, X, Bansal, D, Sullivan, S, Abernathy, DL, Aczel, AA, Zhou, J, Delaire, O, and Shi, L. "Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound ." Physical Review B 94.13 (October 2016). Full Text Open Access Copy

Bansal, D, Aref, A, Dargush, G, and Delaire, O. "Modeling non-harmonic behavior of materials from experimental inelastic neutron scattering and thermal expansion measurements." Journal of physics. Condensed matter : an Institute of Physics journal 28.38 (September 2016): 385201-. Full Text Open Access Copy


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.

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.