REVIEWS OF TOPICAL PROBLEMS

Terahertz probing of topological insulators: photoelectric effects

A. V. Galeeva^a, A. S. Kazakov^a, D. R. Khokhlov<sup>ab

a</sup> Faculty of Physics, Lomonosov Moscow State University
^b Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: The paper presents a review of the possibilities offered by the study of photoelectric effects in 3D topological insulators and a number of other topologically nontrivial materials under terahertz radiation excitation. We show that, in some cases, the information about the electronic states obtained by such experiments is unique.

Keywords: terahertz radiation, photoelectric effects, photogalvanic effect, photoelectromagnetic effect, photoconductivity.

PACS: 72.40.+w, 78.20.-e, 78.56.-a

Received: October 16, 2023
Revised: November 20, 2023
Accepted: December 2, 2023

DOI: 10.3367/UFNr.2023.12.039610

 English version: Physics–Uspekhi, 2024, 67:10, 988–999

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