Supercurrent through InAs nanowires with highly transparent superconducting contacts

Takahiro Nishio; Tatsuya Kozakai; Shinichi Amaha; Marcus Larsson; Henrik Nilsson; Hongqi Xu; Guoqiang Zhang; Kouta Tateno; Hideaki Takayanagi; Koji Ishibashi

doi:10.1088/0957-4484/22/44/445701

Supercurrent through InAs nanowires with highly transparent superconducting contacts

Takahiro Nishio, Tatsuya Kozakai, Shinichi Amaha, Marcus Larsson, Henrik Nilsson, Hongqi Xu, Guoqiang Zhang, Kouta Tateno, Hideaki Takayanagi, Koji Ishibashi

Research output: Contribution to journal › Article › peer-review

Abstract

One-dimensional superconducting transistors have been fabricated with individual InAs nanowires (NWs) using radio-frequency sputter cleaning followed by in situ metal deposition. Because of the highly transparent contacts formed in between the InAs NWs and the metals, supercurrent, multiple Andreev reflections and Shapiro steps under microwave radiation have been observed. Near pinch-off gate regions, Fabry-Perot interference and a normal conductance quantization with resonant features have been observed, which were found to be correlated with a supercurrent flow.

Original language	English
Article number	445701
Journal	Nanotechnology
Volume	22
Issue number	44
DOIs	https://doi.org/10.1088/0957-4484/22/44/445701
Publication status	Published - 2011

Subject classification (UKÄ)

Nano-technology

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10.1088/0957-4484/22/44/445701

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title = "Supercurrent through InAs nanowires with highly transparent superconducting contacts",

abstract = "One-dimensional superconducting transistors have been fabricated with individual InAs nanowires (NWs) using radio-frequency sputter cleaning followed by in situ metal deposition. Because of the highly transparent contacts formed in between the InAs NWs and the metals, supercurrent, multiple Andreev reflections and Shapiro steps under microwave radiation have been observed. Near pinch-off gate regions, Fabry-Perot interference and a normal conductance quantization with resonant features have been observed, which were found to be correlated with a supercurrent flow.",

author = "Takahiro Nishio and Tatsuya Kozakai and Shinichi Amaha and Marcus Larsson and Henrik Nilsson and Hongqi Xu and Guoqiang Zhang and Kouta Tateno and Hideaki Takayanagi and Koji Ishibashi",

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language = "English",

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T1 - Supercurrent through InAs nanowires with highly transparent superconducting contacts

AU - Nishio, Takahiro

AU - Kozakai, Tatsuya

AU - Amaha, Shinichi

AU - Larsson, Marcus

AU - Nilsson, Henrik

AU - Xu, Hongqi

AU - Zhang, Guoqiang

AU - Tateno, Kouta

AU - Takayanagi, Hideaki

AU - Ishibashi, Koji

PY - 2011

Y1 - 2011

N2 - One-dimensional superconducting transistors have been fabricated with individual InAs nanowires (NWs) using radio-frequency sputter cleaning followed by in situ metal deposition. Because of the highly transparent contacts formed in between the InAs NWs and the metals, supercurrent, multiple Andreev reflections and Shapiro steps under microwave radiation have been observed. Near pinch-off gate regions, Fabry-Perot interference and a normal conductance quantization with resonant features have been observed, which were found to be correlated with a supercurrent flow.

AB - One-dimensional superconducting transistors have been fabricated with individual InAs nanowires (NWs) using radio-frequency sputter cleaning followed by in situ metal deposition. Because of the highly transparent contacts formed in between the InAs NWs and the metals, supercurrent, multiple Andreev reflections and Shapiro steps under microwave radiation have been observed. Near pinch-off gate regions, Fabry-Perot interference and a normal conductance quantization with resonant features have been observed, which were found to be correlated with a supercurrent flow.

UR - https://www.scopus.com/pages/publications/80054954241

U2 - 10.1088/0957-4484/22/44/445701

DO - 10.1088/0957-4484/22/44/445701

M3 - Article

C2 - 21975543

SN - 0957-4484

VL - 22

JO - Nanotechnology

JF - Nanotechnology

IS - 44

M1 - 445701

ER -

Supercurrent through InAs nanowires with highly transparent superconducting contacts

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Subject classification (UKÄ)

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