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ID 14265
file
creator
Tou, Hideki
Maniwa, Y.
Koiwasaki, T.
NDC
Physics
abstract
We report magnetic susceptibility measurements on a layered superconductor Li0.48(THF)0.3HfNCl having Tc∼26 K. The present study revealed that (a) the Fermi level density of states is small, N*(EF)∼0.25 states/(eV spin f .u.), (b) mass enhancement is negligible, γ̃∼1, (c) electron-phonon coupling is weak, λep≪1, (d) exchange enhancement is negligible, 1/(1+F0a)∼1, and (e) electronic density parameter is large, rs2D∼10.3 (i.e., low-carrier density). It is difficult to explain the origin of the high Tc in terms of the conventional phonon (BCS) mechanism of superconductivity.
journal title
Physical review letters
volume
Volume 86
issue
Issue 25
start page
5775
end page
5778
date of issued
2001-06-18
publisher
The American Physical Society
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2001 The American Physical Society
relation is version of URL
http://dx.doi.org/10.1103/PhysRevLett.86.5775
department
Graduate School of Advanced Sciences of Matter
Graduate School of Engineering