Gate-tunable giant superconducting nonreciprocal transport in few-layer 
<math>
  <mrow>
    <msub>
      <mi>T</mi>
      <mi>d</mi>
    </msub>
    <mtext>−</mtext>
    <msub>
      <mi>MoTe</mi>
      <mn>2</mn>
    </msub>
  </mrow>
</math>

T. Wakamura; M. Hashisaka; S. Hoshino; M. Bard; S. Okazaki; T. Sasagawa; T. Taniguchi; K. Watanabe; K. Muraki; N. Kumada

doi:10.1103/physrevresearch.6.013132

論文 Gate-tunable giant superconducting nonreciprocal transport in few-layer

T_{d} − {MoTe}_{2}

T. Wakamura ; M. Hashisaka ; S. Hoshino ; M. Bard ; S. Okazaki ; T. Sasagawa ; T. Taniguchi (National Institute for Materials Science) ; K. Watanabe (National Institute for Materials Science) ; K. Muraki ; N. Kumada

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T. Wakamura, M. Hashisaka, S. Hoshino, M. Bard, S. Okazaki, T. Sasagawa, T. Taniguchi, K. Watanabe, K. Muraki, N. Kumada. Gate-tunable giant superconducting nonreciprocal transport in few-layer

T_{d} − {MoTe}_{2}

. Physical Review Research. 2024, 6 (1), 013132. https://doi.org/10.1103/physrevresearch.6.013132

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(abstract)

We demonstrate gate-tunable giant field-dependent nonreciprocal transport (magnetochiral anisotropy) in noncentrosymmetric superconductor Td-MoTe2 in thin limit. Below the supercon- ducting transition temperature (Tc), a giant magnetochiral anisotropy (MCA) with the rectification coefficient γ = 3.1×106 T−1 A−1, is observed at 230 mK. This is one of the largest values reported so far, and is likely attributed to the reduced symmetry of the crystal structure. The temperature dependence of γ identifies the ratchet motion of magnetic vortices as the origin of the MCA. For bilayer Td-MoTe2, we successfully perform gate control of the MCA, and threefold modulation of γ is realized. Our experimental results provide a new route to realize an electrically controllable superconducting rectification device in a single material.

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