Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction
Abstract
We report that superconductivity in topological materials has attracted a great deal of interest in both electron physics and material sciences since the theoretical predictions that Majorana fermions can be realized in topological superconductors. Topological superconductivity could be realized in a type II, band-inverted, InAs/GaSb quantum well if it is in proximity to a conventional superconductor. Here, we report observations of the proximity effect induced giant supercurrent states in an InAs/GaSb bilayer system that is sandwiched between two superconducting tantalum electrodes to form a superconductor-InAs/GaSb-superconductor junction. Lastly, electron transport results show that the supercurrent states can be preserved in a surprisingly large temperature-magnetic field (T – H) parameter space. In addition, the evolution of differential resistance in T and H reveals an interesting superconducting gap structure.
- Authors:
-
[1];
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Princeton Univ., NJ (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1497657
- Alternate Identifier(s):
- OSTI ID: 1420481
- Report Number(s):
- SAND-2014-19055J
Journal ID: ISSN 0021-8979; 672380
- Grant/Contract Number:
- AC04-94AL85000; AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 118; Journal Issue: 13; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Citation Formats
Shi, Xiaoyan, Yu, Wenlong, Jiang, Zhigang, Berniverg, B. Andrei, Pan, Wei, Hawkins, Samuel D., and Klem, John F. Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction. United States: N. p., 2015.
Web. doi:10.1063/1.4932644.
Shi, Xiaoyan, Yu, Wenlong, Jiang, Zhigang, Berniverg, B. Andrei, Pan, Wei, Hawkins, Samuel D., & Klem, John F. Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction. United States. https://doi.org/10.1063/1.4932644
Shi, Xiaoyan, Yu, Wenlong, Jiang, Zhigang, Berniverg, B. Andrei, Pan, Wei, Hawkins, Samuel D., and Klem, John F. Wed .
"Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction". United States. https://doi.org/10.1063/1.4932644. https://www.osti.gov/servlets/purl/1497657.
@article{osti_1497657,
title = {Giant supercurrent states in a superconductor-InAs/GaSb-superconductor junction},
author = {Shi, Xiaoyan and Yu, Wenlong and Jiang, Zhigang and Berniverg, B. Andrei and Pan, Wei and Hawkins, Samuel D. and Klem, John F.},
abstractNote = {We report that superconductivity in topological materials has attracted a great deal of interest in both electron physics and material sciences since the theoretical predictions that Majorana fermions can be realized in topological superconductors. Topological superconductivity could be realized in a type II, band-inverted, InAs/GaSb quantum well if it is in proximity to a conventional superconductor. Here, we report observations of the proximity effect induced giant supercurrent states in an InAs/GaSb bilayer system that is sandwiched between two superconducting tantalum electrodes to form a superconductor-InAs/GaSb-superconductor junction. Lastly, electron transport results show that the supercurrent states can be preserved in a surprisingly large temperature-magnetic field (T – H) parameter space. In addition, the evolution of differential resistance in T and H reveals an interesting superconducting gap structure.},
doi = {10.1063/1.4932644},
journal = {Journal of Applied Physics},
number = 13,
volume = 118,
place = {United States},
year = {Wed Oct 07 00:00:00 EDT 2015},
month = {Wed Oct 07 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
Fabrication and Characterization of Superconducting Films for Superconductor-Topological Insulator Hybrid Devices
journal, September 2019
- Zhang, Xurui; Shi, Xiaoyan
- Journal of Superconductivity and Novel Magnetism, Vol. 33, Issue 1
Topological Majorana Two-Channel Kondo Effect
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