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Single-particle excitations in disordered Weyl fluids

Year: 2017
Type: article
Abstract: The authors determine the fate of single-particle Weyl excitations in the presence of short-range disorder. Using analytic and numerical methods, the authors show that weakly disordered Weyl excitations are not ballistic and acquire an exponentially small but nonzero quasiparticle lifetime due to rare regions of the random disorder potential. As a result, the Green function near the Weyl quasiparticle peaks remains analytic and the avoided quantum critical point renormalizes the single-particle excitation spectrum at finite momentum.
DOI: 10.1103/physrevb.95.235101
Authors: J. H. Pixley, Yang-Zhi Chou, Pallab Goswami, David A. Huse, Rahul Nandkishore, Leo Radzihovsky, S. Das Sarma
Institutions: Joint Quantum Institute, University of Maryland, College Park, University of Colorado Boulder, Princeton University, University of California, Santa Barbara, Kavli Institute for Theoretical Physics, Joint Institute for Laboratory Astrophysics
Language: English
Open Access status: green
Funders: National Science Foundation, Simons Foundation, University of Colorado Boulder, Graduate School, University of Maryland, Division of Materials Research, Kavli Institute for Theoretical Physics, University of California, Santa Barbara
OpenAlex ID: W2568770427
FWCI: 4.249
Cites: 62
Cited by: 52
Related to: 10