Skip to main content

Weyl Semimetal to Metal Phase Transitions Driven by Quasiperiodic Potentials

Author(s): Pixley, JH; Wilson, Justin H; Huse, David A; Gopalakrishnan, Sarang

To refer to this page use:
Abstract: We explore the stability of three-dimensional Weyl and Dirac semimetals subject to quasiperiodic potentials. We present numerical evidence that the semimetal is stable for weak quasiperiodic potentials, despite being unstable for weak random potentials. As the quasiperiodic potential strength increases, the semimetal transitions to a metal, then to an “inverted” semimetal, and then finally to a metal again. The semimetal and metal are distinguished by the density of states at the Weyl point, as well as by level statistics, transport, and the momentum-space structure of eigenstates near the Weyl point. The critical properties of the transitions in quasiperiodic systems differ from those in random systems: we do not find a clear critical scaling regime in energy; instead, at the quasiperiodic transitions, the density of states appears to jump abruptly (and discontinuously to within our resolution).
Publication Date: 18-May-2018
Electronic Publication Date: 18-May-2018
Citation: Pixley, JH, Wilson, Justin H, Huse, David A, Gopalakrishnan, Sarang. (2018). Weyl Semimetal to Metal Phase Transitions Driven by Quasiperiodic Potentials. PHYSICAL REVIEW LETTERS, 120 (10.1103/PhysRevLett.120.207604
DOI: doi:10.1103/PhysRevLett.120.207604
ISSN: 0031-9007
EISSN: 1079-7114
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW LETTERS
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.