Topological Anderson insulating phases in the interacting Haldane model

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Silva, JS (Author) Other; Eduardo V Castro (Author) FCUP; Mondaini, R (Author) Other; Vozmediano, MAH (Author) Other; López Sancho, MP (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: PHYSICAL REVIEW B

Vol. 109

ISSN: 2469-9950

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-010-956

DOI: 10.1103/physrevb.109.125145

Abstract (EN): We analyze the influence of disorder and strong correlations on the topology of two-dimensional Chern insulators. A mean-field calculation in the half-filled Haldane model with extended Hubbard interactions and Anderson disorder shows that the disorder favors topology in the interacting case and extends the topological phase to a larger region of the Hubbard parameters. In the absence of a staggered potential, we find a novel disorder-driven topological phase with Chern number C = 1, with the coexistence of topology with long-range spin and charge orders. More conventional topological Anderson insulating phases are also found in the presence of a finite staggered potential.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8