Disorder-Driven Multifractality Transition in Weyl Nodal Loops

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020

Autores

Goncalves, M (Autor) Outra; Ribeiro, P (Autor) Outra; Eduardo V Castro (Autor) FCUP; Araujo, MAN (Autor) Outra

Revista

Título: Physical Review Letters

Vol. 124

ISSN: 0031-9007

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 12 Citações

Outras Informações

ID Authenticus: P-00R-YXZ

DOI: 10.1103/physrevlett.124.136405

Abstract (EN): The effect of short-range disorder in nodal line semimetals is studied by numerically exact means. For arbitrary small disorder, a novel semimetallic phase is unveiled for which the momentum-space amplitude of the ground-state wave function is concentrated around the nodal line and follows a multifractal distribution. At a critical disorder strength, a semimetal to compressible metal transition occurs, coinciding with a multi- to single-fractality transition. The universality class of this critical point is characterized by the correlation length and dynamical exponents. At considerably higher disorder, an Anderson metal-insulator transition takes place. Our results show that the nature of the semimetallic phase in nonclean samples is fundamentally different from a clean nodal semimetal.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6