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Nonreciprocal charge transport at topological insulator/superconductor interface

Author

Listed:
  • Kenji Yasuda

    (University of Tokyo
    Massachusetts Institute of Technology)

  • Hironori Yasuda

    (University of Tokyo)

  • Tian Liang

    (RIKEN Center for Emergent Matter Science (CEMS))

  • Ryutaro Yoshimi

    (RIKEN Center for Emergent Matter Science (CEMS))

  • Atsushi Tsukazaki

    (Tohoku University)

  • Kei S. Takahashi

    (RIKEN Center for Emergent Matter Science (CEMS))

  • Naoto Nagaosa

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

  • Masashi Kawasaki

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

  • Yoshinori Tokura

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

Abstract

Topological superconductor is attracting growing interest for its potential application to topological quantum computation. The superconducting proximity effect on the topological insulator surface state is one promising way to yield topological superconductivity. The superconductivity realized at the interface between Bi2Te3 and non-superconductor FeTe is one such candidate. Here, to detect the mutual interaction between superconductivity and topological surface state, we investigate nonreciprocal transport; i.e., current-direction dependent resistance, which is sensitive to the broken inversion symmetry of the electronic state. The largely enhanced nonreciprocal phenomenon is detected in the Bi2Te3/FeTe heterostructure associated with the superconducting transition. The emergent nonreciprocal signal at low magnetic fields is attributed to the current-induced modulation of supercurrent density under the in-plane magnetic fields due to the spin-momentum locking. The angular dependence of the signal reveals the symmetry of superconductivity and indicates the existence of another mechanism of nonreciprocal transport at high fields.

Suggested Citation

  • Kenji Yasuda & Hironori Yasuda & Tian Liang & Ryutaro Yoshimi & Atsushi Tsukazaki & Kei S. Takahashi & Naoto Nagaosa & Masashi Kawasaki & Yoshinori Tokura, 2019. "Nonreciprocal charge transport at topological insulator/superconductor interface," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10658-3
    DOI: 10.1038/s41467-019-10658-3
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    Cited by:

    1. Taras Golod & Vladimir M. Krasnov, 2022. "Demonstration of a superconducting diode-with-memory, operational at zero magnetic field with switchable nonreciprocity," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Lorenz Bauriedl & Christian Bäuml & Lorenz Fuchs & Christian Baumgartner & Nicolas Paulik & Jonas M. Bauer & Kai-Qiang Lin & John M. Lupton & Takashi Taniguchi & Kenji Watanabe & Christoph Strunk & Ni, 2022. "Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe2," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    3. Yuki M. Itahashi & Toshiya Ideue & Shintaro Hoshino & Chihiro Goto & Hiromasa Namiki & Takao Sasagawa & Yoshihiro Iwasa, 2022. "Giant second harmonic transport under time-reversal symmetry in a trigonal superconductor," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    4. Xu Zhang & Tongshuai Zhu & Shuai Zhang & Zhongqiang Chen & Anke Song & Chong Zhang & Rongzheng Gao & Wei Niu & Yequan Chen & Fucong Fei & Yilin Tai & Guoan Li & Binghui Ge & Wenkai Lou & Jie Shen & Ha, 2024. "Light-induced giant enhancement of nonreciprocal transport at KTaO3-based interfaces," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    5. James Jun He & Yukio Tanaka & Naoto Nagaosa, 2023. "The supercurrent diode effect and nonreciprocal paraconductivity due to the chiral structure of nanotubes," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    6. Zhaowei Zhang & Naizhou Wang & Ning Cao & Aifeng Wang & Xiaoyuan Zhou & Kenji Watanabe & Takashi Taniguchi & Binghai Yan & Wei-bo Gao, 2022. "Controlled large non-reciprocal charge transport in an intrinsic magnetic topological insulator MnBi2Te4," Nature Communications, Nature, vol. 13(1), pages 1-6, December.

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