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ID 14254
file
creator
Maniwa, Y.
Muroga, N.
Sato, N.
Tou, Hideki
Shimoda, H.
Iwasa, Y.
Mitani, H.
Kikuchi, K.
Suzuki, S.
Achiba, Y.
Kosaka, M.
Tanigaki, K.
Chen, X.
Labes, M. M.
NDC
Physics
abstract
The static spin susceptibility, χsSQ and χsNMR, in C60 superconductors K3C60 and Rb3C60 was studied using a dc superconducting quantum interference device magnetometer and 13C NMR. We found that χsSQ has a peculiar temperature (T) dependence behaving as (1-CT2) with a positive constant C∼(1×10-6) deg-2, contrary to the almost T independent χsNMR. These observations indicate a possibility that there exist Kondo-like impurities, whose Kondo temperature is ∼500 K and whose content is ∼0.001 spins per carbon. On the basis of these studies, the lattice constant dependence of the intrinsic spin susceptibility was established to be dχs/da0=(5.7±0.4)×10-4 emu/mol C60/Å in A3C60 superconductors where A is an alkali metal.
journal title
Physical review. B, Condensed matter
volume
Volume 58
issue
Issue 17
start page
11603
end page
11606
date of issued
1998-11-01
publisher
American Physical Society
issn
1098-0121
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
rights
Copyright (c) 1998 American Physical Society
relation url
department
Graduate School of Advanced Sciences of Matter