Olivier Delaire

Olivier Delaire

Associate Professor of Physics

Overview

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

Sales, BC, Delaire, O, McGuire, MA, and May, AF. "Thermoelectric properties of Co-, Ir-, and Os-doped FeSi alloys: Evidence for strong electron-phonon coupling." Physical Review B 83.12 (March 2011). Full Text

Lucas, MS, Muñoz, JA, Mauger, L, Li, CW, Sheets, AO, Turgut, Z, Horwath, J, Abernathy, DL, Stone, MB, Delaire, O, Xiao, Y, and Fultz, B. "Publisher's Note: “Effects of chemical composition and B2 order on phonons in bcc Fe–Co alloys” [J. Appl. Phys. 108, 023519 (2010)]." Journal of Applied Physics 108.7 (October 2010): 079902-079902. Full Text

Lucas, MS, Muñoz, JA, Delaire, O, Markovskiy, ND, Stone, MB, Abernathy, DL, Halevy, I, Mauger, L, Keith, JB, Winterrose, ML, Xiao, Y, Lerche, M, and Fultz, B. "Effects of composition, temperature, and magnetism on phonons in bcc Fe-V alloys." Physical Review B 82.14 (October 2010). Full Text

Lucas, MS, Muñoz, JA, Mauger, L, Li, CW, Sheets, AO, Turgut, Z, Horwath, J, Abernathy, DL, Stone, MB, Delaire, O, Xiao, Y, and Fultz, B. "Effects of chemical composition and B2 order on phonons in bcc Fe–Co alloys." Journal of Applied Physics 108.2 (July 15, 2010): 023519-023519. Full Text

Delaire, O, Lucas, MS, dos Santos, AM, Subedi, A, Sefat, AS, McGuire, MA, Mauger, L, Muñoz, JA, Tulk, CA, Xiao, Y, Somayazulu, M, Zhao, JY, Sturhahn, W, Alp, EE, Singh, DJ, Sales, BC, Mandrus, D, and Egami, T. "Temperature and pressure dependence of the Fe-specific phonon density of states in." Physical Review B 81.9 (March 2010). Full Text

Lucas, MS, Delaire, O, Winterrose, ML, Swan-Wood, T, Kresch, M, Halevy, I, Fultz, B, Hu, J, Lerche, M, Hu, MY, and Somayazulu, M. "Effects of vacancies on phonon entropy of FeAl." Physical Review B 80.21 (December 2009). Full Text

Delaire, O, May, AF, McGuire, MA, Porter, WD, Lucas, MS, Stone, MB, Abernathy, DL, Ravi, VA, Firdosy, SA, and Snyder, GJ. "Phonon density of states and heat capacity of La(3−x)Te4." Physical Review B 80.18 (November 2009). Full Text

Christianson, AD, Lumsden, MD, Delaire, O, Stone, MB, Abernathy, DL, McGuire, MA, Sefat, AS, Jin, R, Sales, BC, Mandrus, D, Mun, ED, Canfield, PC, Lin, JY, Lucas, M, Kresch, M, Keith, JB, Fultz, B, Goremychkin, EA, and McQueeney, RJ. "Phonon density of states of LaFeAsO(1-x)Fx." Physical review letters 101.15 (October 8, 2008): 157004-. Full Text

Delaire, O, Lucas, MS, Muñoz, JA, Kresch, M, and Fultz, B. "Adiabatic electron-phonon interaction and high-temperature thermodynamics of A15 compounds." Physical review letters 101.10 (September 5, 2008): 105504-. Full Text

Pages