Self-reconstruction of order parameter in spin-triplet superconductor UTe$_2$
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866908557129023488 |
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| author | Tokiwa, Y. Opletal, P. Sakai, H. Kubo, K. Kambe, S. Yamamoto, E. Kimata, M. Awaji, S. Sasaki, T. Aoki, D. Yanase, Y. Tokunaga, Y. Haga, Y. |
| author_facet | Tokiwa, Y. Opletal, P. Sakai, H. Kubo, K. Kambe, S. Yamamoto, E. Kimata, M. Awaji, S. Sasaki, T. Aoki, D. Yanase, Y. Tokunaga, Y. Haga, Y. |
| contents | We investigate the effect of easy-axis metamagnetic crossover on superconductivity in UTe$_2$ along the $a$-axis through measurements of AC susceptibility, magnetization, and the magnetocaloric effect. In ultra-clean single crystals, we identify a field-induced phase transition within the superconducting state at 5.6 T, driven by metamagnetism. This transition leads to a high-field superconducting state, significantly increasing the upper critical field to 12 T. A sudden increase in entropy at the transition suggests a self-reconstruction of the order parameter, enabling multi-component superconducting states to adapt to external perturbations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_11769 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Self-reconstruction of order parameter in spin-triplet superconductor UTe$_2$ Tokiwa, Y. Opletal, P. Sakai, H. Kubo, K. Kambe, S. Yamamoto, E. Kimata, M. Awaji, S. Sasaki, T. Aoki, D. Yanase, Y. Tokunaga, Y. Haga, Y. Superconductivity Strongly Correlated Electrons We investigate the effect of easy-axis metamagnetic crossover on superconductivity in UTe$_2$ along the $a$-axis through measurements of AC susceptibility, magnetization, and the magnetocaloric effect. In ultra-clean single crystals, we identify a field-induced phase transition within the superconducting state at 5.6 T, driven by metamagnetism. This transition leads to a high-field superconducting state, significantly increasing the upper critical field to 12 T. A sudden increase in entropy at the transition suggests a self-reconstruction of the order parameter, enabling multi-component superconducting states to adapt to external perturbations. |
| title | Self-reconstruction of order parameter in spin-triplet superconductor UTe$_2$ |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2210.11769 |