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Pis'ma v Zh. Èksper. Teoret. Fiz., 2016, Volume 104, Issue 10, Pages 729–733 (Mi jetpl5120)  

CONDENSED MATTER

Terahertz resistive response of a two-dimensional topological insulator in a quasiballistic transport regime

Z. D. Kvonab, K. M. Dantscherc, M.-T. Scherrc, A. S. Yaroshevichb, N. N. Mikhailovab

a Novosibirsk State University, Novosibirsk, Russia
b Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
c Terahertz Center, University of Regensburg, Regensburg, Germany

Abstract: The terahertz resistive response of a two-dimensional topological insulator in a HgTe quantum well in the quasiballistic transport regime is studied. The photoresistance appearing only near the charge neutrality point is detected. The application of the magnetic field up to 4 T in the plane of the quantum well results in an increase in the photoresistance in the peak and in the expansion of the region near the charge neutrality point where it exists. The reported results imply that the observed photoresistance is due to transitions involving edge dispersion branches of the two-dimensional topological insulator.

Funding Agency Grant Number
Russian Science Foundation 16-12-10041
Deutsche Forschungsgemeinschaft 1666
Elite Network of Bavaria K-NW-2013-247


DOI: https://doi.org/10.7868/S0370274X16220112

Full text: PDF file (422 kB)
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English version:
Journal of Experimental and Theoretical Physics Letters, 2016, 104:10, 716–720

Bibliographic databases:

Document Type: Article
Received: 27.09.2016

Citation: Z. D. Kvon, K. M. Dantscher, M.-T. Scherr, A. S. Yaroshevich, N. N. Mikhailov, “Terahertz resistive response of a two-dimensional topological insulator in a quasiballistic transport regime”, Pis'ma v Zh. Èksper. Teoret. Fiz., 104:10 (2016), 729–733; JETP Letters, 104:10 (2016), 716–720

Citation in format AMSBIB
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\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
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\pages 729--733
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