Evidence for quasi-two-dimensional superconductivity in electron-doped Li0.48(THF)yHfNCl
Physical review. Third series. B, Condensed matter and materials physics 63 巻 2 号
020508- 頁
2001-01-01 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Evidence for quasi-two-dimensional superconductivity in electron-doped Li0.48(THF)yHfNCl
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| 作成者 |
Tou Hideki
Maniwa Y.
Koiwasaki T.
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| 収録物名 |
Physical review. Third series. B, Condensed matter and materials physics
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| 巻 | 63 |
| 号 | 2 |
| 開始ページ | 020508 |
| 抄録 |
Dc-magnetization and NMR measurements were carried out on a layered superconductor Li0.48(THF)yHfNCl having Tc∼26 K. For the magnetic field applied perpendicular to the basal plane (ab plane) above 10 kOe, we found a pronounced broadening of the superconducting transition in temperature dependence of magnetization and the substantial diamagnetic signals were observed as high as 2Tc, indicating the existence of superconducting fluctuations. Analysis based on the anisotropic Ginzburg-Landau model reveals that the present system is a highly anisotropic superconductor. 7Li-NMR signals were observed around zero Knight shift, indicating that the local Fermi-level density of states, N(EF), at Li site is practically nothing and the superconductivity is derived from the HfNCl layer. We have shown the unambiguous evidence for the quasi-two-dimensional superconducting character in this system.
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| NDC分類 |
物理学 [ 420 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2001-01-01 |
| 権利情報 |
Copyright (c) 2000 The American Physical Society
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.63.020508
[DOI] http://dx.doi.org/10.1103/PhysRevB.63.020508
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