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Title: McMillan-Rowell Like Oscillations in a Superconductor-InAs/GaSb-Superconductor Junction

Abstract

We have fabricated a superconductor (Ta)-InAs/GaSb bilayer-superconductor (Ta) junction device that has a long mean free path and can preserve the wavelike properties of particles (electrons and holes) inside the junction. Differential conductance measurements were carried out at low temperatures in this device, and McMillan-Rowell like oscillations (MROs) were observed. Surprisingly, a much larger Fermi velocity, compared to that from Shubnikov-de Haas oscillations, was obtained from the frequency of MROs. Possible mechanisms are discussed for this discrepancy.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1235300
Alternate Identifier(s):
OSTI ID: 1421191
Report Number(s):
SAND2015-7565J
Journal ID: ISSN 0003-6951; 603525
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 05; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Shi, Xiaoyan, Yu, Wenlong, Hawkins, Samuel D., Klem, John F., and Pan, Wei. McMillan-Rowell Like Oscillations in a Superconductor-InAs/GaSb-Superconductor Junction. United States: N. p., 2015. Web. doi:10.1063/1.4928186.
Shi, Xiaoyan, Yu, Wenlong, Hawkins, Samuel D., Klem, John F., & Pan, Wei. McMillan-Rowell Like Oscillations in a Superconductor-InAs/GaSb-Superconductor Junction. United States. https://doi.org/10.1063/1.4928186
Shi, Xiaoyan, Yu, Wenlong, Hawkins, Samuel D., Klem, John F., and Pan, Wei. Tue . "McMillan-Rowell Like Oscillations in a Superconductor-InAs/GaSb-Superconductor Junction". United States. https://doi.org/10.1063/1.4928186. https://www.osti.gov/servlets/purl/1235300.
@article{osti_1235300,
title = {McMillan-Rowell Like Oscillations in a Superconductor-InAs/GaSb-Superconductor Junction},
author = {Shi, Xiaoyan and Yu, Wenlong and Hawkins, Samuel D. and Klem, John F. and Pan, Wei},
abstractNote = {We have fabricated a superconductor (Ta)-InAs/GaSb bilayer-superconductor (Ta) junction device that has a long mean free path and can preserve the wavelike properties of particles (electrons and holes) inside the junction. Differential conductance measurements were carried out at low temperatures in this device, and McMillan-Rowell like oscillations (MROs) were observed. Surprisingly, a much larger Fermi velocity, compared to that from Shubnikov-de Haas oscillations, was obtained from the frequency of MROs. Possible mechanisms are discussed for this discrepancy.},
doi = {10.1063/1.4928186},
journal = {Applied Physics Letters},
number = 05,
volume = 107,
place = {United States},
year = {2015},
month = {8}
}

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