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Эта публикация цитируется в 11 научных статьях (всего в 11 статьях)
КОНДЕНСИРОВАННОЕ СОСТОЯНИЕ
Conductance oscillations at the interface between a superconductor and
the helical edge channel in a narrow HgTe quantum well
A. Kononova, S. V. Egorova, N. Titovab, Z. D. Kvonc, N. N. Mikhailovc, S. A. Dvoretskiic, E. V. Deviatovda a Institute of Solid State Physics, Russian Academy of Sciences
b Moscow State Pedagogical University
c Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
d Moscow Institute of Physics and Technology
Аннотация:
We experimentally investigate electron transport through the interface between
a superconductor and the edge of a two-dimensional electron system with band
inversion. The interface is realized as a tunnel NbN side contact to a narrow
$8$ nm HgTe quantum well. It demonstrates a typical Andreev behavior with finite
conductance within the superconducting gap. Surprisingly, the conductance is
modulated by a number of equally-spaced oscillations. The oscillations are
present only within the superconducting gap and at lowest, below $1$ K,
temperatures. The oscillations disappear completely in magnetic fields, normal
to the two-dimensional electron system plane. In contrast, the oscillations'
period is only weakly affected by the highest, up to $14$ T, in-plane oriented
magnetic fields. We interpret this behavior as the interference oscillations in
a helical one-dimensional edge channel due to a proximity with a superconductor.
Поступила в редакцию: 26.11.2014
Образец цитирования:
A. Kononov, S. V. Egorov, N. Titova, Z. D. Kvon, N. N. Mikhailov, S. A. Dvoretskii, E. V. Deviatov, “Conductance oscillations at the interface between a superconductor and
the helical edge channel in a narrow HgTe quantum well”, Письма в ЖЭТФ, 101:1 (2015), 44–49; JETP Letters, 101:1 (2015), 41–46
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl4517 https://www.mathnet.ru/rus/jetpl/v101/i1/p44
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