Tunable superconductivity coexisting with the anomalous Hall effect in 1T'-WS2
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| author | Hossain, Md Shafayat Zhang, Qi Graf, David Iraola, Mikel Müller, Tobias Mardanya, Sougata Tu, Yi-Hsin Lai, Zhuangchai Soldini, Martina O. Li, Siyuan Yao, Yao Jiang, Yu-Xiao Cheng, Zi-Jia Litskevich, Maksim Casas, Brian Cochran, Tyler A. Yang, Xian P. Kim, Byunghoon Watanabe, Kenji Taniguchi, Takashi Chowdhury, Sugata Bansil, Arun Zhang, Hua Chang, Tay-Rong Fischer, Mark Neupert, Titus Balicas, Luis Hasan, M. Zahid |
| author_facet | Hossain, Md Shafayat Zhang, Qi Graf, David Iraola, Mikel Müller, Tobias Mardanya, Sougata Tu, Yi-Hsin Lai, Zhuangchai Soldini, Martina O. Li, Siyuan Yao, Yao Jiang, Yu-Xiao Cheng, Zi-Jia Litskevich, Maksim Casas, Brian Cochran, Tyler A. Yang, Xian P. Kim, Byunghoon Watanabe, Kenji Taniguchi, Takashi Chowdhury, Sugata Bansil, Arun Zhang, Hua Chang, Tay-Rong Fischer, Mark Neupert, Titus Balicas, Luis Hasan, M. Zahid |
| contents | Transition metal dichalcogenides are a family of quasi-two-dimensional materials that display a high technological potential due to their wide range of electronic ground states, e.g., from superconducting to semiconducting, depending on the chemical composition, crystal structure, or electrostatic doping. Here, we unveil that by tuning a single parameter, the hydrostatic pressure P, a cascade of electronic phase transitions can be induced in the few-layer transition metal dichalcogenide 1T'-WS2, including superconducting, topological, and anomalous Hall effect phases. Specifically, as P increases, we observe a dual phase transition: the suppression of superconductivity with the concomitant emergence of an anomalous Hall effect at P=1.15 GPa. Remarkably, upon further increasing the pressure above 1.6 GPa, we uncover a reentrant superconducting state that emerges out of a state still exhibiting an anomalous Hall effect. This superconducting state shows a marked increase in superconducting anisotropy with respect to the phase observed at ambient pressure, suggesting a different superconducting state with a distinct pairing symmetry. Via first-principles calculations, we demonstrate that the system concomitantly transitions into a strong topological phase with markedly different band orbital characters and Fermi surfaces contributing to the superconductivity. These findings position 1T'-WS2 as a unique, tunable superconductor, wherein superconductivity, anomalous transport, and band features can be tuned through the application of moderate pressures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_05980 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tunable superconductivity coexisting with the anomalous Hall effect in 1T'-WS2 Hossain, Md Shafayat Zhang, Qi Graf, David Iraola, Mikel Müller, Tobias Mardanya, Sougata Tu, Yi-Hsin Lai, Zhuangchai Soldini, Martina O. Li, Siyuan Yao, Yao Jiang, Yu-Xiao Cheng, Zi-Jia Litskevich, Maksim Casas, Brian Cochran, Tyler A. Yang, Xian P. Kim, Byunghoon Watanabe, Kenji Taniguchi, Takashi Chowdhury, Sugata Bansil, Arun Zhang, Hua Chang, Tay-Rong Fischer, Mark Neupert, Titus Balicas, Luis Hasan, M. Zahid Superconductivity Mesoscale and Nanoscale Physics Materials Science Applied Physics Transition metal dichalcogenides are a family of quasi-two-dimensional materials that display a high technological potential due to their wide range of electronic ground states, e.g., from superconducting to semiconducting, depending on the chemical composition, crystal structure, or electrostatic doping. Here, we unveil that by tuning a single parameter, the hydrostatic pressure P, a cascade of electronic phase transitions can be induced in the few-layer transition metal dichalcogenide 1T'-WS2, including superconducting, topological, and anomalous Hall effect phases. Specifically, as P increases, we observe a dual phase transition: the suppression of superconductivity with the concomitant emergence of an anomalous Hall effect at P=1.15 GPa. Remarkably, upon further increasing the pressure above 1.6 GPa, we uncover a reentrant superconducting state that emerges out of a state still exhibiting an anomalous Hall effect. This superconducting state shows a marked increase in superconducting anisotropy with respect to the phase observed at ambient pressure, suggesting a different superconducting state with a distinct pairing symmetry. Via first-principles calculations, we demonstrate that the system concomitantly transitions into a strong topological phase with markedly different band orbital characters and Fermi surfaces contributing to the superconductivity. These findings position 1T'-WS2 as a unique, tunable superconductor, wherein superconductivity, anomalous transport, and band features can be tuned through the application of moderate pressures. |
| title | Tunable superconductivity coexisting with the anomalous Hall effect in 1T'-WS2 |
| topic | Superconductivity Mesoscale and Nanoscale Physics Materials Science Applied Physics |
| url | https://arxiv.org/abs/2501.05980 |