Thermal and quantum phase slips in niobium-nitride nanowires based on suspended carbon nanotubes

Kohei Masuda; Satoshi Moriyama; Yoshifumi Morita; Katsuyoshi Komatsu; Tasuku Takagi; Takayuki Hashimoto; Norihisa Miki; Takasumi Tanabe; Hideyuki Maki

doi:10.1063/1.4952721

Thermal and quantum phase slips in niobium-nitride nanowires based on suspended carbon nanotubes

Kohei Masuda, Satoshi Moriyama, Yoshifumi Morita, Katsuyoshi Komatsu, Tasuku Takagi, Takayuki Hashimoto, Norihisa Miki, Takasumi Tanabe, Hideyuki Maki

研究成果: Article › 査読

12 被引用数 (Scopus)

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Superconducting nanowires have attracted considerable attention due to their unique quantum-mechanical properties, as well as their potential as next-generation quantum nanodevices, such as single-photon detectors, phase-slip (PS) qubits, and other hybrid structures. In this study, we present the results of one-dimensional (1D) superconductivity in nanowires fabricated by coating suspended carbon nanotubes with a superconducting thin niobium nitride (NbN) film. In the resistance-temperature characteristic curves, hallmarks of 1D superconductivity with PS events are observed with unconventional negative magnetoresistance. We also confirm that a crossover occurs between thermal and quantum PSs as the temperature is lowered.

本文言語	English
論文番号	222601
ジャーナル	Applied Physics Letters
巻	108
号	22
DOI	https://doi.org/10.1063/1.4952721
出版ステータス	Published - 2016 5月 30

ASJC Scopus subject areas

物理学および天文学（その他）

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10.1063/1.4952721

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AU - Masuda, Kohei

AU - Moriyama, Satoshi

AU - Morita, Yoshifumi

AU - Komatsu, Katsuyoshi

AU - Takagi, Tasuku

AU - Hashimoto, Takayuki

AU - Miki, Norihisa

AU - Tanabe, Takasumi

AU - Maki, Hideyuki

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AB - Superconducting nanowires have attracted considerable attention due to their unique quantum-mechanical properties, as well as their potential as next-generation quantum nanodevices, such as single-photon detectors, phase-slip (PS) qubits, and other hybrid structures. In this study, we present the results of one-dimensional (1D) superconductivity in nanowires fabricated by coating suspended carbon nanotubes with a superconducting thin niobium nitride (NbN) film. In the resistance-temperature characteristic curves, hallmarks of 1D superconductivity with PS events are observed with unconventional negative magnetoresistance. We also confirm that a crossover occurs between thermal and quantum PSs as the temperature is lowered.

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Thermal and quantum phase slips in niobium-nitride nanowires based on suspended carbon nanotubes

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