Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session L44: Heat Transport in Condensed Systems I
8:00 AM–10:48 AM,
Wednesday, March 4, 2020
Room: 704
Sponsoring
Unit:
DCOMP
Chair: Vasili Perebeinos, State Univ of NY - Buffalo
Abstract: L44.00007 : Spatially-Resolved Phonon Hydrodynamic Flow from First Principles*
Presenter:
Georgios Varnavides
(Massachusetts Institute of Technology MIT)
Authors:
Georgios Varnavides
(Massachusetts Institute of Technology MIT)
Adam Jermyn
(Center for Computational Astrophysics, Simons Foundation, Flatiron Institute)
Polina Anikeeva
(Massachusetts Institute of Technology MIT)
Prineha Narang
(John A. Paulson School of Engineering and Applied Sciences, Harvard University)
Theoretical efforts to characterize and predict such phenomena are often restricted to momentum-space, effectively assuming spatial homogeneity. However, hydrodynamic flow exhibits strong real-space signatures. In this talk, we extend previous work and solve the phonon Boltzmann Transport Equation using both spatial and momentum resolution2. We present ab initio calculations of hydrodynamic phenomena in real-space in experimentally-realizable geometries.
1S. Huberman, R. A. Duncan, K. A. Nelson, et. al, Science 26 (2019)
2G. Varnavides, A. S. Jermyn, P. Anikeeva, and P. Narang, Phys. Rev. B 100, 115402 (2019).
*GV and PN acknowledge funding from the DARPA DSO on Driven and Nonequilibrium Quantum Systems and the ONR grant (N00014-18-1-2691).
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