Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session W46: Excited State VI: Lattice and Spin Dynamics
3:00 PM–5:48 PM,
Thursday, March 17, 2022
Room: McCormick Place W-470A
Sponsoring Units: DCOMP DMP
Chair: Yuan Ping, UC Santa Cruz
Abstract: W46.00004 : Exotic transport phenomena in quantum materials from ab initio*
4:00 PM–4:12 PM
(Massachusetts Institute of Technology MI)
Uri Vool, Assaf Hamo, Amir Yacoby
We use ab initio methods to investigate this exotic transport phenomenon. First, we focus on the electron-phonon interactions and show how they give rise to anomalous behaviors from both electron and phonon specifics in two prototypical semimetals WP2 and WTe2 [2-4]. We show that rapid e-ph scattering can lead to indirect electron-electron interactions, which conserves the total electron momentum. By solving the numerical BTE with the ab initio input, we demonstrate that the current density distribution in a thin long channel resembles a parabolic flow pattern [2,5]. Inspired by the recent space-resolved measurements, we characterize the different transport regimes in the parameter space of lmr, lmc, and w. Finally, we present predictions on candidates ZrSiS and TaAs2 and propose design principles to realize hydrodynamics in anisotropic metals and semimetals .
*This work was primarily supported by the Quantum Science Center (QSC), a National Quantum Information Science Research Center of the U.S. Department of Energy (DOE). P.N. is a Moore Inventor Fellow and gratefully acknowledges support through Grant No. GBMF8048 from the Gordon and Betty Moore Foundation. This research used resources of the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract DE-AC05-00OR22725 as well as the resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
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