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ID 19289
file
creator
Nakamura, Ko-ichi
Kitaoka, Yoshio
Asayama, Kunisuke
Nakamoto, Go
Fujii, Hironobu
abstract
The magnetic field dependence of the spin-lattice relaxation rate 1/T1 of 119Sn in CeNiSn has been measured down to 20 mK in a field range of 0.2-8 T. (T1T)-1 is constant below 1 K, which depends on the external field in such a manner that its value stays constant to 2 T, while it increases linearly with the field up to 8 T. It is shown that this magnetic field dependence of (T1T)-1 is well explained by the simple scenario that the quasiparticle density of states at the Fermi level is produced by the Zeeman splitting of the up- and down-spin bands, keeping its V-shaped gapped structure unchanged for fields less than 8 T. The present experiment has elucidated that CeNiSn is in a semimetallic ground state with a low carrier density and the application of a magnetic field exceeding 2 T turns out to supply effective carriers.
journal title
Physical Review B - Condensed Matter and Materials Physics
volume
Volume 54
issue
Issue 9
start page
6062
end page
6064
date of issued
1996-09-01
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
text version
publisher
rights
Copyright (c) 1996 The American Physical Society.
relation url
department
Graduate School of Advanced Sciences of Matter