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
アクセス数 : 860
ダウンロード数 : 217

今月のアクセス数 : 3
今月のダウンロード数 : 2
ファイル情報(添付)
2001PRB_63_e020508.pdf 158 KB 種類 : 全文
タイトル ( eng )
Evidence for quasi-two-dimensional superconductivity in electron-doped Li0.48(THF)yHfNCl
作成者
Tou Hideki
Maniwa Y.
Koiwasaki T.
収録物名
Physical review. Third series. B, Condensed matter and materials physics
63
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.
NDC分類
物理学 [ 420 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2001-01-01
権利情報
Copyright (c) 2000 The American Physical Society
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