O
Olivier Delaire
Researcher at Duke University
Publications - 103
Citations - 5482
Olivier Delaire is an academic researcher from Duke University. The author has contributed to research in topics: Phonon & Inelastic neutron scattering. The author has an hindex of 33, co-authored 103 publications receiving 4138 citations. Previous affiliations of Olivier Delaire include Pennsylvania State University & California Institute of Technology.
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Orbitally driven giant phonon anharmonicity in SnSe
Chen Li,Jiawang Hong,Andrew F. May,Dipanshu Bansal,Songxue Chi,Tao Hong,Georg Ehlers,Olivier Delaire +7 more
TL;DR: In this article, a microscopic picture connecting electronic structure and phonon anharmonicity in SnSe is provided, and offers new insights on how electron-phonon interactions may lead to the realization of ultralow thermal conductivity.
Journal ArticleDOI
Giant anharmonic phonon scattering in PbTe
Olivier Delaire,Jie Ma,Karol Marty,Andrew F. May,Michael A. McGuire,Mao-Hua Du,David J. Singh,Andrey Podlesnyak,Georg Ehlers,Mark D Lumsden,Brian C. Sales +10 more
TL;DR: A combination of inelastic neutron scattering measurements and first-principles computations of the phonons identifies a strong anharmonic coupling between the ferroelectric transverse optic mode and the longitudinal acoustic modes in PbTe.
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Anomalously low electronic thermal conductivity in metallic vanadium dioxide
Sangwook Lee,Sangwook Lee,Kedar Hippalgaonkar,Kedar Hippalgaonkar,Fan Yang,Fan Yang,Jiawang Hong,Jiawang Hong,Changhyun Ko,Joonki Suh,Kai Liu,Kai Liu,Kevin Wang,Jeffrey J. Urban,Xiang Zhang,Xiang Zhang,Xiang Zhang,Chris Dames,Chris Dames,Sean A. Hartnoll,Olivier Delaire,Olivier Delaire,Junqiao Wu,Junqiao Wu +23 more
TL;DR: An order-of-magnitude breakdown of the Wiedemann-Franz law is reported at high temperatures ranging from 240 to 340 kelvin in metallic vanadium dioxide in the vicinity of its metal-insulator transition.
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Recent progresses on physics and applications of vanadium dioxide
TL;DR: In this article, the phase transition mechanism and dynamics, phase diagrams, and imperfection effects, as well as growth and applications of vanadium dioxide (VO2) have been reviewed.
Journal ArticleDOI
Metallization of vanadium dioxide driven by large phonon entropy
John D. Budai,Jiawang Hong,Michael Manley,Eliot D. Specht,Chen Li,Jonathan Z. Tischler,Douglas L. Abernathy,Ayman Said,Bogdan M. Leu,Lynn A. Boatner,Robert J. McQueeney,Olivier Delaire +11 more
TL;DR: The critical role of anharmonic lattice dynamics in metal oxide phase competition is illustrated, which provides guidance for the predictive design of new materials and how a balance between higher entropy in the metal and orbital-driven lower energy in the insulator fully describes the thermodynamic forces controlling the MIT.