Work

Discrete spectrum of edge states in a two-dimensional topological insulator

Year: 2025

Type: preprint

Abstract: The interaction model of two electrons in the edge states of a two-dimensional topological insulator is investigated. Both solutions of the Schr\"odinger equation and solutions of the Bethe-Salpeter equation at different values of the Fermi energy are considered. It is shown that for the Bethe-Salpeter equation, which takes into account the existence of the Fermi surface, there is a discrete spectrum in the system of two electrons. This phenomenon does not appear in the case of the Schr\"odinger equation.

Source: arXiv (Cornell University)

Authors: Milstein, A. I., Terekhov, I. S.

Institutions: Novosibirsk State University, Siberian Branch of the Russian Academy of Sciences, Budker Institute of Nuclear Physics, ITMO University

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

OpenAlex ID: W6979249150

Cites:

Cited by:

Related to: