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ID 14257
file
creator
Tou, Hideki
Maniwa, Y.
Koiwasaki, T.
NDC
Physics
abstract
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.
journal title
Physical review. Third series. B, Condensed matter and materials physics
volume
Volume 63
issue
Issue 2
start page
020508
date of issued
2001-01-01
publisher
American Physical Society
issn
1098-0121
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2000 The American Physical Society
relation url
department
Graduate School of Advanced Sciences of Matter
Graduate School of Engineering