Anomalous Transport Signatures in Weyl Semimetals with Point Defects

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Pires, JPS (Autor) FCUP; Joao, SM (Autor) Outra; Ferreira, A (Autor) Outra; Amorim, B (Autor) Outra; Lopes, JMVP (Autor) FCUP

Revista

Título: Physical Review Letters

Vol. 129

ISSN: 0031-9007

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 9 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6