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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.
Appointments and Affiliations
- Associate Professor of Mechanical Engineering and Materials Science
- Associate Professor of Physics
- Associate Professor of Chemistry
- Faculty Network Member of The Energy Initiative
- Office Location: 3395 Fciemas Building, Box 90300, Durham, NC 27708
- Office Phone: (919) 660-5606
- Email Address: email@example.com
- Ph.D. California Institute of Technology, 2006
- M.Sc. Pennsylvania State University, 2000
Olivier Delaire investigates atomic dynamics in materials, focusing on problems at the interface of Materials Science, Physics and Chemistry. His research group utilizes a range of experimental and computational approaches, including neutron and x-ray scattering techniques, optical spectroscopy, and first-principles quantum materials simulations.
Awards, Honors, and Distinctions
- DOE EARLY CAREER AWARD 2014 “Quasiparticle Couplings in Transport of Heat, Charge, and Spin for Novel Energy Materials”. Department of Energy. 2014
- World Materials Research Institute Forum Prize, 2nd International Workshop for Young Materials Scientists, Berlin, Germany. World Materials Research Institute. 2010
- Director's Award, Outstanding Science Team Accomplishment. Oak Ridge National Laboratory. 2009
- Clifford G. Shull Fellowship. Oak Ridge National Laboratory. 2008
- Louis Rosen Prize. Los Alamos National Laboratory . 2008
- Outstanding Ph.D. Research Award. Neutron Scattering Society of America. 2006
- ME 221L: Structure and Properties of Solids
- ME 555: Advanced Topics in Mechanical Engineering
- ME 591: Research Independent Study in Mechanical Engineering or Material Science
In the News
- Copper Ions Flow Like Liquid through the Frozen Atomic Network of a Crystal (Oct 8, 2018 | Pratt School of Engineering)
- The Atomic Dynamics of Rare Everlasting Electric Fields (Jan 10, 2018 | Pratt School of Engineering)
- For This Metal, Electricity Flows, But Not the Heat (Feb 3, 2017 | Pratt School of Engineering)
- This Metal Conducts Electricity But Not Heat (Feb 2, 2017 | Forbes)
- Olivier Delaire: Designing Thermoelectric Materials One Atom at a Time (Oct 22, 2015 | Pratt School of Engineering)
- Ding, J; Niedziela, JL; Bansal, D; Wang, J; He, X; May, AF; Ehlers, G; Abernathy, DL; Said, A; Alatas, A; Ren, Y; Arya, G; Delaire, O, Anharmonic lattice dynamics and superionic transition in AgCrSe2, Proceedings of the National Academy of Sciences of the United States of America, vol 117 no. 8 (2020), pp. 3930-3937 [10.1073/pnas.1913916117] [abs].
- He, X; Bansal, D; Winn, B; Chi, S; Boatner, L; Delaire, O, Anharmonic Eigenvectors and Acoustic Phonon Disappearance in Quantum Paraelectric
SrTiO3, Physical Review Letters, vol 124 no. 14 (2020) [10.1103/physrevlett.124.145901] [abs].
- Bansal, D; Niedziela, JL; Calder, S; Lanigan-Atkins, T; Rawl, R; Said, AH; Abernathy, DL; Kolesnikov, AI; Zhou, H; Delaire, O, Magnetically driven phonon instability enables the metal–insulator transition in h-FeS, Nature Physics (2020) [10.1038/s41567-020-0857-1] [abs].
- Bansal, D; Niedziela, JL; He, X; Lanigan-Atkins, T; Said, A; Alatas, A; Abernathy, DL; Ren, Y; Gao, B; Cheong, SW; Delaire, O, Lattice dynamics of the hybrid improper ferroelectrics (Ca,Sr)3Ti2 O7, Physical Review B, vol 100 no. 21 (2019) [10.1103/PhysRevB.100.214304] [abs].
- Leiner, JC; Jeschke, HO; Valentí, R; Zhang, S; Savici, AT; Lin, JYY; Stone, MB; Lumsden, MD; Hong, J; Delaire, O; Bao, W; Broholm, CL, Frustrated Magnetism in Mott Insulating (V1-xCrx)2 O3, Physical Review X, vol 9 no. 1 (2019) [10.1103/PhysRevX.9.011035] [abs].
- Niedziela, JL; Bansal, D; May, AF; Ding, J; Lanigan-Atkins, T; Ehlers, G; Abernathy, DL; Said, A; Delaire, O, Selective breakdown of phonon quasiparticles across superionic transition in CuCrSe 2, Nature Physics, vol 15 no. 1 (2019), pp. 73-78 [10.1038/s41567-018-0298-2] [abs].
- Bansal, D; Niedziela, JL; Sinclair, R; Garlea, VO; Abernathy, DL; Chi, S; Ren, Y; Zhou, H; Delaire, O, Momentum-resolved observations of the phonon instability driving geometric improper ferroelectricity in yttrium manganite, Nature Communications, vol 9 no. 1 (2018) [10.1038/s41467-017-02309-2] [abs].
- 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; Trigo, M, Ultrafast disordering of vanadium dimers in photoexcited VO2, Science (New York, N.Y.), vol 362 no. 6414 (2018), pp. 572-576 [10.1126/science.aau3873] [abs].
- Liu, K; Lee, S; Yang, S; Delaire, O; Wu, J, Recent progresses on physics and applications of vanadium dioxide, Materials Today, vol 21 no. 8 (2018), pp. 875-896 [10.1016/j.mattod.2018.03.029] [abs].
- Muy, S; Bachman, J; Giordano, L; Abernathy, D; Bansal, D; Delaire, O; Kanno, R; Maglia, F; Lupart, S; Shao-Horn, Y, Mobility and stability descriptors of lithium ion conductors based on lattice dynamics, Abstracts of Papers of the American Chemical Society, vol 255 (2018) [abs].
- Luo, C; Bansal, D; Li, J; Viehland, D; Winn, B; Ren, Y; Li, X; Luo, H; 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, vol 96 no. 17 (2017) [10.1103/PhysRevB.96.174108] [abs].
- Bansal, D; Niedziela, JL; May, AF; Said, A; Ehlers, G; Abernathy, DL; Huq, A; Kirkham, M; Zhou, H; Delaire, O, Lattice dynamics and thermal transport in multiferroic CuCrO2, Physical Review B, vol 95 no. 5 (2017) [10.1103/PhysRevB.95.054306] [abs].
- 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; Wu, J, Anomalously low electronic thermal conductivity in metallic vanadium dioxide., Science (New York, N.Y.), vol 355 no. 6323 (2017), pp. 371-374 [10.1126/science.aag0410] [abs].
- Bao, F; Archibald, R; Bansal, D; Delaire, O, Hierarchical optimization for neutron scattering problems, Journal of Computational Physics, vol 315 (2016), pp. 39-51 [10.1016/j.jcp.2016.03.017] [abs].
- Luo, C; Wang, Y; Ge, W; Li, J; Viehland, D; Delaire, O; Li, X; Luo, H, Hierarchical domain structure of lead-free piezoelectric (Na1/2 Bi1/2)TiO3-(K1/2 Bi1/2)TiO3 single crystals, Journal of Applied Physics, vol 119 no. 17 (2016) [10.1063/1.4948478] [abs].
- May, AF; Delaire, O; Niedziela, JL; Lara-Curzio, E; Susner, MA; Abernathy, DL; Kirkham, M; McGuire, MA, Structural phase transition and phonon instability in Cu12Sb4S13, Physical Review B, vol 93 no. 6 (2016) [10.1103/PhysRevB.93.064104] [abs].
- Li, CW; Hong, J; May, AF; Bansal, D; Chi, S; Hong, T; Ehlers, G; Delaire, O, Orbitally driven giant phonon anharmonicity in SnSe, Nature Physics, vol 11 no. 12 (2015), pp. 1063-1069 [10.1038/nphys3492] [abs].
- Bansal, D; Li, CW; Said, AH; Abernathy, DL; Yan, J; Delaire, O, Electron-phonon coupling and thermal transport in the thermoelectric compound Mo3Sb(7−x)Te(x), Physical Review B, vol 92 no. 21 (2015) [10.1103/PhysRevB.92.214301] [abs].
- Delaire, O; Al-Qasir, II; May, AF; Li, CW; Sales, BC; Niedziela, JL; Ma, J; Matsuda, M; Abernathy, DL; Berlijn, T, Heavy-impurity resonance, hybridization, and phonon spectral functions in Fe(1−x)M(x)Si (M=Ir, Os), Physical Review B, vol 91 no. 9 (2015) [10.1103/PhysRevB.91.094307] [abs].
- Chen, X; Weathers, A; Carrete, J; Mukhopadhyay, S; Delaire, O; Stewart, DA; Mingo, N; Girard, SN; Ma, J; Abernathy, DL; Yan, J; Sheshka, R; Sellan, DP; Meng, F; Jin, S; Zhou, J; Shi, L, Twisting phonons in complex crystals with quasi-one-dimensional substructures., Nature Communications, vol 6 (2015) [10.1038/ncomms7723] [abs].
- Budai, JD; Hong, J; Manley, ME; Specht, ED; Li, CW; Tischler, JZ; Abernathy, DL; Said, AH; Leu, BM; Boatner, LA; McQueeney, RJ; Delaire, O, Metallization of vanadium dioxide driven by large phonon entropy., Nature, vol 515 no. 7528 (2014), pp. 535-539 [10.1038/nature13865] [abs].
- Li, CW; Hellman, O; Ma, J; May, AF; Cao, HB; Chen, X; Christianson, AD; Ehlers, G; Singh, DJ; Sales, BC; Delaire, O, Phonon self-energy and origin of anomalous neutron scattering spectra in SnTe and PbTe thermoelectrics., Physical Review Letters, vol 112 no. 17 (2014) [10.1103/physrevlett.112.175501] [abs].
- Manley, ME; Lynn, JW; Abernathy, DL; Specht, ED; Delaire, O; Bishop, AR; Sahul, R; Budai, JD, Phonon localization drives polar nanoregions in a relaxor ferroelectric., Nature Communications, vol 5 (2014) [10.1038/ncomms4683] [abs].
- Ma, J; Delaire, O; May, AF; Carlton, CE; McGuire, MA; VanBebber, LH; Abernathy, DL; Ehlers, G; Hong, T; Huq, A; Tian, W; Keppens, VM; Shao-Horn, Y; Sales, BC, Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2., Nature Nanotechnology, vol 8 no. 6 (2013), pp. 445-451 [10.1038/nnano.2013.95] [abs].
- Delaire, O; Stone, MB; Ma, J; Huq, A; Gout, D; Brown, C; Wang, KF; Ren, ZF, Anharmonic phonons and magnons in BiFeO 3, Physical Review B, vol 85 no. 6 (2012) [10.1103/PhysRevB.85.064405] [abs].
- Delaire, O; Ma, J; Marty, K; May, AF; McGuire, MA; Du, M-H; Singh, DJ; Podlesnyak, A; Ehlers, G; Lumsden, MD; Sales, BC, Giant anharmonic phonon scattering in PbTe., Nature Materials, vol 10 no. 8 (2011), pp. 614-619 [10.1038/nmat3035] [abs].
- Delaire, O; Marty, K; Stone, MB; Kent, PRC; Lucas, MS; Abernathy, DL; Mandrus, D; Sales, BC, Phonon softening and metallization of a narrow-gap semiconductor by thermal disorder, Proceedings of the National Academy of Sciences of the United States of America, vol 108 no. 12 (2011), pp. 4725-4730 [10.1073/pnas.1014869108] [abs].
- 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; Egami, T, Temperature and pressure dependence of the Fe-specific phonon density of states in Ba ( Fe1-x Cox)2As2, Physical Review B, vol 81 no. 9 (2010) [10.1103/PhysRevB.81.094504] [abs].
- 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; McQueeney, RJ, Phonon density of states of LaFeAsO(1-x)Fx., Physical Review Letters, vol 101 no. 15 (2008) [10.1103/physrevlett.101.157004] [abs].
- Delaire, O; Lucas, MS; Muñoz, JA; Kresch, M; Fultz, B, Adiabatic electron-phonon interaction and high-temperature thermodynamics of A15 compounds., Physical Review Letters, vol 101 no. 10 (2008) [10.1103/physrevlett.101.105504] [abs].
- Delaire, O; Fultz, B, Charge redistribution and phonon entropy of vanadium alloys., Physical Review Letters, vol 97 no. 24 (2006) [10.1103/physrevlett.97.245701] [abs].
- Yue, AF; Papandrew, AB; Delaire, O; Fultz, B; Chowdhuri, Z; Dimeo, RM; Neumann, DA, Vibrations of micro-eV energies in nanocrystalline microstructures., Physical Review Letters, vol 93 no. 20 (2004) [10.1103/physrevlett.93.205501] [abs].
- Delaire, O; Swan-Wood, T; Fultz, B, Negative entropy of mixing for vanadium-platinum solutions., Physical Review Letters, vol 93 no. 18 (2004) [10.1103/physrevlett.93.185704] [abs].