This article is cited in 2 papers

XXIII International symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11–14, 2019

On the spin states of electrons in a double quantum dot in a two-dimensional topological insulator with spin-orbit interaction

A. A. Sukhanov, V. A. Sablikov

Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences

Abstract: The spectra and spin structure of the states of two interacting electrons localized in a double quantum dot in a two-dimensional topological insulator with spin-orbit interaction are investigated. It is found that, in such a system, a singlet-triplet transition in the ground state without a magnetic field can be implemented. Spin-orbit interaction leads to the splitting of polarized triplet levels and to anticrossing, when one of them crosses the singlet.

Keywords: topological insulators, spin-orbit interaction, singlet-triplet transition, quantum dot.

Received: 24.04.2019
Revised: 29.04.2019
Accepted: 29.04.2019

DOI: 10.21883/FTP.2019.09.48134.17

 English version: Semiconductors, 2019, 53:9, 1229–1233

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