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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
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.
備考
This is an article published by American Physical Society
発行日
2017-09
出版物タイトル
Physical Review B
96巻
10号
出版者
American Physical Society
開始ページ
104502
ISSN
2469-9950
NCID
AA11187113
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
American Physical Society
論文のバージョン
publisher
DOI
Web of Sience KeyUT
関連URL
isVersionOf https://doi.org/10.1103/PhysRevB.96.104502