Anomalous Transport Signatures in Weyl Semimetals with Point Defects

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Pires, JPS (Author) FCUP; Joao, SM (Author) Other; Ferreira, A (Author) Other; Amorim, B (Author) Other; Lopes, JMVP (Author) FCUP

Journal

Title: Physical Review Letters

Vol. 129

ISSN: 0031-9007

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 9 Citations

Other information

Authenticus ID: P-00X-GF2

DOI: 10.1103/physrevlett.129.196601

Abstract (EN): We present the first theoretical study of transport properties of Weyl semimetals with point defects. Focusing on a class of time-reversal symmetric Weyl lattice models, we show that dilute lattice vacancies induce a finite density of quasilocalized states at and near the nodal energy, causing strong modifications to the low-energy spectrum. This generates novel transport effects, namely, (i) an oscillatory behavior of the dc conductivity with the charge carrier density in the absence of magnetic fields, and (ii) a plateau-shaped dissipative optical response for photon frequencies below the interband threshold, EF less than or similar to PLANCK CONSTANT OVER TWO PI omega less than or similar to 2EF. Our results provide a path to engineer unconventional quantum transport effects in Weyl semimetals by means of common point defects.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6