Disorder-Driven Multifractality Transition in Weyl Nodal Loops

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Goncalves, M (Author) Other; Ribeiro, P (Author) Other; Eduardo V Castro (Author) FCUP; Araujo, MAN (Author) Other

Journal

Title: Physical Review Letters

Vol. 124

ISSN: 0031-9007

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 12 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6