Work

Electrical transport in the Hatsugai-Kohmoto model

Year: 2025

Type: article

Abstract: The exactly solvable ``H-K'' family of interacting electron models introduced by Hatsugai and Kohmoto have played an important role in recent studies of the effect of wave function topology on the properties of correlation-driven (``Mott'') insulators. The authors show here that the very features that enable the exact solution lead to pathological transport properties including electrical conduction in the notionally insulating gapped Mott state and to divergent responses to applied magnetic fields. Caution is required in interpreting the results of the exact solutions.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.111.075124

Authors: Daniele Guerci, Giorgio Sangiovanni, Andrew J. Millis, Michele Fabrizio

Institutions: Flatiron Institute, University of Würzburg, Columbia University, Scuola Internazionale Superiore di Studi Avanzati

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green