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

11 被引用数 (Scopus)

抄録

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
108
22
DOI
出版ステータスPublished - 2016 5 30

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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