Quantized conductance doubling and hard gap in a two-dimensional semiconductor–superconductor heterostructure

M. Kjaergaard; F. Nichele; H. J. Suominen; M. P. Nowak; M. Wimmer; A. R. Akhmerov; J. A. Folk; K. Flensberg; J. Shabani; C. J. Palmstrøm; C. M. Marcus

doi:10.1038/ncomms12841

Nature Communications (Sep 2016)

Quantized conductance doubling and hard gap in a two-dimensional semiconductor–superconductor heterostructure

M. Kjaergaard,
F. Nichele,
H. J. Suominen,
M. P. Nowak,
M. Wimmer,
A. R. Akhmerov,
J. A. Folk,
K. Flensberg,
J. Shabani,
C. J. Palmstrøm,
C. M. Marcus

Affiliations

M. Kjaergaard: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
F. Nichele: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
H. J. Suominen: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
M. P. Nowak: Kavli Institute of Nanoscience, Delft University of Technology
M. Wimmer: Kavli Institute of Nanoscience, Delft University of Technology
A. R. Akhmerov: Kavli Institute of Nanoscience, Delft University of Technology
J. A. Folk: Department of Physics and Astronomy, University of British Columbia
K. Flensberg: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
J. Shabani: California NanoSystems Institute, University of California
C. J. Palmstrøm: California NanoSystems Institute, University of California
C. M. Marcus: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen

DOI: https://doi.org/10.1038/ncomms12841
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 6

Abstract

Read online

Interface transparency between 2D semiconductors and superconductors is a longstanding problem, seriously hindering potential applications. Here, using a new hybrid system, Kjaergaard et al. report quantized conductance doubling and a hard superconducting gap measured via a quantum point contact, indicating a near pristine interface.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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