Josephson supercurrent through a topological insulator surface state
M. Veldhorst
1
,
M. Snelder
1
,
M. Hoek
1
,
T Gang
1
,
V. K. Guduru
2
,
X. L. Wang
3
,
U. ZEITLER
2
,
W. G. van der Wiel
1
,
A. A. Golubov
1
,
H. Hilgenkamp
1, 4
,
A. Brinkman
1
Publication type: Journal Article
Publication date: 2012-02-19
scimago Q1
wos Q1
SJR: 14.204
CiteScore: 61.8
Impact factor: 38.5
ISSN: 14761122, 14764660
DOI:
10.1038/nmat3255
PubMed ID:
22344327
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
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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297
Total citations:
297
Citations from 2024:
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(10.1%)
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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.
Cite this
RIS
Copy
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 -
Cite this
BibTex (up to 50 authors)
Copy
@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}
}
Cite this
MLA
Copy
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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