Olivier Delaire

Olivier Delaire

Associate Professor of Mechanical Engineering and Materials Science

Office Location: 
3395 Fciemas Building, Box 90300, Durham, NC 27708
Front Office Address: 
3395 Fciemas Building, Box 90300, Durham, NC 27708
Phone: 
(919) 660-5606

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

Mukhopadhyay, S., et al. “The curious case of cuprous chloride: Giant thermal resistance and anharmonic quasiparticle spectra driven by dispersion nesting.” Physical Review B, vol. 96, no. 10, Sept. 2017. Scopus, doi:10.1103/PhysRevB.96.100301. Full Text

Berlijn, T., et al. “Itinerant Antiferromagnetism in RuO_{2}..” Physical Review Letters, vol. 118, no. 7, Feb. 2017. Epmc, doi:10.1103/physrevlett.118.077201. Full Text Open Access Copy

Bansal, D., et al. “Lattice dynamics and thermal transport in multiferroic CuCrO2.” Physical Review B, vol. 95, no. 5, Feb. 2017. Scopus, doi:10.1103/PhysRevB.95.054306. Full Text

Lee, Sangwook, et al. “Anomalously low electronic thermal conductivity in metallic vanadium dioxide..” Science (New York, N.Y.), vol. 355, no. 6323, Jan. 2017, pp. 371–74. Epmc, doi:10.1126/science.aag0410. Full Text

Bao, Feng, et al. “Complex optimization for big computational and experimental neutron datasets..” Nanotechnology, vol. 27, no. 48, Dec. 2016. Epmc, doi:10.1088/0957-4484/27/48/484002. Full Text

Chen, X., et al. “Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound S r14 C u24 O41.” Physical Review B, vol. 94, no. 13, Oct. 2016. Scopus, doi:10.1103/PhysRevB.94.134309. Full Text Open Access Copy

Bansal, Dipanshu, et al. “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, vol. 28, no. 38, Sept. 2016. Epmc, doi:10.1088/0953-8984/28/38/385201. Full Text Open Access Copy

Bansal, D., et al. “Phonon anharmonicity and negative thermal expansion in SnSe.” Physical Review B, vol. 94, no. 5, Aug. 2016. Scopus, doi:10.1103/PhysRevB.94.054307. Full Text Open Access Copy

Jiang, M. P., et al. “The origin of incipient ferroelectricity in lead telluride..” Nature Communications, vol. 7, July 2016. Epmc, doi:10.1038/ncomms12291. Full Text Open Access Copy

Bao, F., et al. “Hierarchical optimization for neutron scattering problems.” Journal of Computational Physics, vol. 315, June 2016, pp. 39–51. Scopus, doi:10.1016/j.jcp.2016.03.017. Full Text

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