TY - JOUR

T1 - Interference Transport in a Two-Dimensional Topological Insulator in a CdHgTe Quantum Well

AU - Ryzhkov, M. S.

AU - Kozlov, D. A.

AU - Khudaiberdiev, D. A.

AU - Kvon, Z. D.

AU - Mikhailov, N. N.

N1 - This work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. 075-15-2020-797 (13.1902.21.0024)).

PY - 2023/1

Y1 - 2023/1

N2 - Interference transport in mesoscopic samples of a two-dimensional topological insulator in CdHgTe quantum wells is studied for the first time. It is established that quasi-ballistic edge transport in such an insulator exists at lengths up to 10 µm. In this transport regime, almost periodic Aharonov–Bohm oscillations caused by the formation of closed loops with a characteristic size of about 200 nm by edge states are found. The phase coherence length in the two-dimensional topological insulator is determined for the first time from the measured temperature dependence of their amplitude.

AB - Interference transport in mesoscopic samples of a two-dimensional topological insulator in CdHgTe quantum wells is studied for the first time. It is established that quasi-ballistic edge transport in such an insulator exists at lengths up to 10 µm. In this transport regime, almost periodic Aharonov–Bohm oscillations caused by the formation of closed loops with a characteristic size of about 200 nm by edge states are found. The phase coherence length in the two-dimensional topological insulator is determined for the first time from the measured temperature dependence of their amplitude.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85150687986&origin=inward&txGid=79e69f9d46bbb003ed21d33b64aa4ebb

UR - https://www.mendeley.com/catalogue/742e508c-7f25-3df5-a866-acffd3003a63/

U2 - 10.1134/S0021364022602731

DO - 10.1134/S0021364022602731

M3 - Article

VL - 117

SP - 44

EP - 47

JO - JETP Letters

JF - JETP Letters

SN - 0021-3640

IS - 1

ER -