Josephson supercurrent through a topological insulator surface state
Тип публикации: Journal Article
Дата публикации: 2012-02-19
scimago Q1
wos Q1
БС1
SJR: 14.204
CiteScore: 61.8
Impact factor: 38.5
ISSN: 14761122, 14764660
PubMed ID:
22344327
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Краткое описание
The long-sought yet elusive Majorana fermion is predicted to arise from a combination of a superconductor and a topological insulator. An essential step in the hunt for this emergent particle is the unequivocal observation of supercurrent in a topological phase. Here, direct evidence for Josephson supercurrents in superconductor (Nb)-topological insulator (Bi(2)Te(3))-superconductor electron-beam fabricated junctions is provided by the observation of clear Shapiro steps under microwave irradiation, and a Fraunhofer-type dependence of the critical current on magnetic field. Shubnikov-de Haas oscillations in magnetic fields up to 30 T reveal a topologically non-trivial two-dimensional surface state. This surface state is attributed to mediate the ballistic Josephson current despite the fact that the normal state transport is dominated by diffusive bulk conductivity. The lateral Nb-Bi(2)Te(3)-Nb junctions hence provide prospects for the realization of devices supporting Majorana fermions.
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Veldhorst M. et al. Josephson supercurrent through a topological insulator surface state // Nature Materials. 2012. Vol. 11. No. 5. pp. 417-421.
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Veldhorst M., Snelder M., Hoek M., Gang T., Guduru V. K., Wang X. L., ZEITLER U., van der Wiel W. G., Golubov A. A., Hilgenkamp H., Brinkman A. Josephson supercurrent through a topological insulator surface state // Nature Materials. 2012. Vol. 11. No. 5. pp. 417-421.
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TY - JOUR
DO - 10.1038/nmat3255
UR - https://doi.org/10.1038/nmat3255
TI - Josephson supercurrent through a topological insulator surface state
T2 - Nature Materials
AU - Veldhorst, M.
AU - Snelder, M.
AU - Hoek, M.
AU - Gang, T
AU - Guduru, V. K.
AU - Wang, X. L.
AU - ZEITLER, U.
AU - van der Wiel, W. G.
AU - Golubov, A. A.
AU - Hilgenkamp, H.
AU - Brinkman, A.
PY - 2012
DA - 2012/02/19
PB - Springer Nature
SP - 417-421
IS - 5
VL - 11
PMID - 22344327
SN - 1476-1122
SN - 1476-4660
ER -
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@article{2012_Veldhorst,
author = {M. Veldhorst and M. Snelder and M. Hoek and T Gang and V. K. Guduru and X. L. Wang and U. ZEITLER and W. G. van der Wiel and A. A. Golubov and H. Hilgenkamp and A. Brinkman},
title = {Josephson supercurrent through a topological insulator surface state},
journal = {Nature Materials},
year = {2012},
volume = {11},
publisher = {Springer Nature},
month = {feb},
url = {https://doi.org/10.1038/nmat3255},
number = {5},
pages = {417--421},
doi = {10.1038/nmat3255}
}
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MLA
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Veldhorst, M., et al. “Josephson supercurrent through a topological insulator surface state.” Nature Materials, vol. 11, no. 5, Feb. 2012, pp. 417-421. https://doi.org/10.1038/nmat3255.
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