Systematic study of superconductivity in few-layer $T_d$-MoTe$_2$
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914371742990336 |
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| author | Wakamura, Taro Hashisaka, Masayuki Nomura, Yusuke Bard, Matthieu Okazaki, Shota Sasagawa, Takao Taniguchi, Takashi Watanabe, Kenji Muraki, Koji Kumada, Norio |
| author_facet | Wakamura, Taro Hashisaka, Masayuki Nomura, Yusuke Bard, Matthieu Okazaki, Shota Sasagawa, Takao Taniguchi, Takashi Watanabe, Kenji Muraki, Koji Kumada, Norio |
| contents | We present a systematic investigation of superconductivity in a topological superconductor candidate $T_{\rm d}$-MoTe$_2$ in the few-layer limit. By examining multiple mechanically exfoliated samples with different thicknesses, substrates and crystal qualities, we quantitatively correlate superconducting temperature ($T_c$) with disorder, carrier density, carrier type and mobility. By integrating these experimental findings with first-principles calculations, we reveal the relationship between the band structure and superconductivity in this material. Notably, in 2 L samples we access a highly hole-doped regime that has not been systematically explored in previous experiments, providing a complementary perspective to earlier studies. In this regime, we demonstrate that superconductivity can be realized in a manner consistent with a conventional phonon-mediated $s_{(++)}$-wave pairing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_04978 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Systematic study of superconductivity in few-layer $T_d$-MoTe$_2$ Wakamura, Taro Hashisaka, Masayuki Nomura, Yusuke Bard, Matthieu Okazaki, Shota Sasagawa, Takao Taniguchi, Takashi Watanabe, Kenji Muraki, Koji Kumada, Norio Mesoscale and Nanoscale Physics Materials Science Superconductivity We present a systematic investigation of superconductivity in a topological superconductor candidate $T_{\rm d}$-MoTe$_2$ in the few-layer limit. By examining multiple mechanically exfoliated samples with different thicknesses, substrates and crystal qualities, we quantitatively correlate superconducting temperature ($T_c$) with disorder, carrier density, carrier type and mobility. By integrating these experimental findings with first-principles calculations, we reveal the relationship between the band structure and superconductivity in this material. Notably, in 2 L samples we access a highly hole-doped regime that has not been systematically explored in previous experiments, providing a complementary perspective to earlier studies. In this regime, we demonstrate that superconductivity can be realized in a manner consistent with a conventional phonon-mediated $s_{(++)}$-wave pairing. |
| title | Systematic study of superconductivity in few-layer $T_d$-MoTe$_2$ |
| topic | Mesoscale and Nanoscale Physics Materials Science Superconductivity |
| url | https://arxiv.org/abs/2603.04978 |