Research output: Contribution to journal › Article › peer-review
Electrically controlled switching between spatially separated conducting channels in a quantum point contact. / Сарыпов, Даниил Игоревич; Похабов, Дмитрий Александрович; Погосов, Артур Григорьевич et al.
In: St. Petersburg State Polytechnical University Journal: Physics and Mathematics, Vol. 16, No. 1.3, 20, 2023, p. 117-123.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Electrically controlled switching between spatially separated conducting channels in a quantum point contact
AU - Сарыпов, Даниил Игоревич
AU - Похабов, Дмитрий Александрович
AU - Погосов, Артур Григорьевич
AU - Жданов, Евгений Юрьевич
AU - Бакаров, Асхат Климович
N1 - The study was funded by the Russian Science Foundation (project 22-12-00343 − experimental measurements) and the Ministry of Science and Higher Education of the Russian Federation (project FWGW-2022-0011 − characterization of initial heterostructures).
PY - 2023
Y1 - 2023
N2 - We demonstrate transverse magnetic focusing of electrons in semiconductor devices consisting of two trenched-type quantum point contacts (QPC) acting as an injector and a detector. The peak in the detector voltage, corresponding to the penetration of injected electrons into the detector, is observed. Applying the voltage difference between injector side gates is found to cause an abrupt shift of the peak position on the magnetic field scale. This shift can be explained by switching between spatially separated channels inside the multi-well potential formed inside a QPC-injector.
AB - We demonstrate transverse magnetic focusing of electrons in semiconductor devices consisting of two trenched-type quantum point contacts (QPC) acting as an injector and a detector. The peak in the detector voltage, corresponding to the penetration of injected electrons into the detector, is observed. Applying the voltage difference between injector side gates is found to cause an abrupt shift of the peak position on the magnetic field scale. This shift can be explained by switching between spatially separated channels inside the multi-well potential formed inside a QPC-injector.
U2 - 10.18721/JPM.161.320
DO - 10.18721/JPM.161.320
M3 - Article
VL - 16
SP - 117
EP - 123
JO - St. Petersburg State Polytechnical University Journal: Physics and Mathematics
JF - St. Petersburg State Polytechnical University Journal: Physics and Mathematics
SN - 2618-8686
IS - 1.3
M1 - 20
ER -
ID: 55569685