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ID 14257
本文ファイル
著者
Tou, Hideki
Maniwa, Y.
Koiwasaki, T.
NDC
物理学
抄録(英)
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.
掲載誌名
Physical review. Third series. B, Condensed matter and materials physics
63巻
2号
開始ページ
020508
出版年月日
2001-01-01
出版者
American Physical Society
ISSN
1098-0121
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2000 The American Physical Society
関連情報URL
部局名
先端物質科学研究科
工学研究科