ID | 55629 |
フルテキストURL | |
著者 |
Maeda, Satoki
Department of Physics, Okayama University
Hirose, Ryohei
Department of Physics, Okayama University
Matano, Kazuaki
Department of Physics, Okayama University
Novak, Mario
Institute of Scientific and Industrial Research, Osaka University
Ando, Yoichi
Physics Institute II, University of Cologne
Zheng, Guo-qing
Department of Physics, Okayama University
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抄録 | The In-doped topological crystalline insulator Sn1−x InxTe is a candidate for a topological superconductor, where a pseudo-spin-triplet state has been proposed. To clarify the spin symmetry of Sn1−x InxTe, we perform 125Te-nuclear magnetic resonance (NMR) measurements in polycrystalline samples with 0 x 0.15. The penetration depth calculated from the NMR line width is T independent below half the superconducting transition temperature (Tc) in polycrystalline Sn0.96In0.04Te, which indicates a fully opened superconducting gap. In this sample, the spin susceptibility measured by the spin Knight shift (Ks) at an external magnetic field of μ0H0 = 0.0872 T decreases below Tc, and Ks(T = 0)/Ks(T = Tc) reaches 0.36 ± 0.10, which is far below the limiting value 2/3 expected for a spin-triplet state for a cubic crystal structure. Our result indicates that polycrystalline Sn0.96In0.04Te is a spin-singlet superconductor.
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備考 | This is an article published by American Physical Society
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発行日 | 2017-09
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出版物タイトル |
Physical Review B
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巻 | 96巻
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号 | 10号
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出版者 | American Physical Society
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開始ページ | 104502
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ISSN | 2469-9950
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NCID | AA11187113
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | American Physical Society
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論文のバージョン | publisher
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1103/PhysRevB.96.104502
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