Observation of surface superconductivity in bulk polycrystalline MoS2 induced by electric double-layer doping
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912568959827968 |
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| author | Shimazu, Yoshihiro Miyatake, Tomonori Ueno, Kento Uehara, Masatomo |
| author_facet | Shimazu, Yoshihiro Miyatake, Tomonori Ueno, Kento Uehara, Masatomo |
| contents | We report the observation of electric-field-induced superconductivity on the surface of bulk polycrystalline MoS2 using electric double-layer doping. A gate voltage applied in an ionic liquid environment systematically increased carrier density, leading to an insulator-to-metal transition and a sharp resistance drop at low temperatures, indicating superconductivity. The onset temperature of superconductivity strongly depended on carrier density inferred from conductance, showing a significant increase and eventual saturation. Unlike prior studies limited to single-crystalline MoS2, our results demonstrate that superconductivity can also be electrostatically induced in polycrystalline systems, broadening the scope for exploring gate-controlled superconductivity in a wider range of materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_03031 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of surface superconductivity in bulk polycrystalline MoS2 induced by electric double-layer doping Shimazu, Yoshihiro Miyatake, Tomonori Ueno, Kento Uehara, Masatomo Superconductivity Materials Science We report the observation of electric-field-induced superconductivity on the surface of bulk polycrystalline MoS2 using electric double-layer doping. A gate voltage applied in an ionic liquid environment systematically increased carrier density, leading to an insulator-to-metal transition and a sharp resistance drop at low temperatures, indicating superconductivity. The onset temperature of superconductivity strongly depended on carrier density inferred from conductance, showing a significant increase and eventual saturation. Unlike prior studies limited to single-crystalline MoS2, our results demonstrate that superconductivity can also be electrostatically induced in polycrystalline systems, broadening the scope for exploring gate-controlled superconductivity in a wider range of materials. |
| title | Observation of surface superconductivity in bulk polycrystalline MoS2 induced by electric double-layer doping |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2509.03031 |