Change of superconducting character in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>UTe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> induced by magnetic field
書誌事項
- タイトル別名
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- Change of superconducting character in UTe₂ induced by magnetic field
抄録
UTe₂ is a recently discovered spin-triplet superconductor. One of the characteristic features of UTe₂ is a magnetic field (H)-boosted superconductivity >16 T when H is applied exactly parallel to the b axis. To date, this superconducting (SC) state has not been thoroughly investigated, and the SC properties as well as the spin state of this high-H SC (HHSC) phase are not well understood. In this letter, we performed AC magnetic susceptibility and nuclear magnetic resonance measurements and found that, up to 24.8 T, the HHSC state has bulk nature and is quite sensitive to the H angle and that its SC character is different from that in the low-H SC (LHSC) state. The dominant spin component of the spin-triplet pair is along the a axis in the LHSC state but is changed in the HHSC state along the b axis. Our results indicate that H-induced multiple SC states originate from the remaining spin degrees of freedom.
収録刊行物
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- Physical Review B
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Physical Review B 107 (6), 2023-02-01
American Physical Society (APS)
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詳細情報 詳細情報について
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- CRID
- 1050017732462667904
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- ISSN
- 24699969
- 24699950
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- HANDLE
- 2433/287031
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
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