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ID 19279
file
creator
Abe, Kazuo
Takeda, Naoya
Ishikawa, Masayasu
abstract
We report an evidence of order due to quadrupolar pair interactions, taking place along the rare-earth (R) series of RPd3S4 slightly above their dipolar magnetic order. Specific-heat measurements proved that the R ions in these bronzes possess highly degenerate ground states, which may cause large orbital effects at low temperatures. The magnetic ordering temperatures much exceed those predicted by the de Gennes scaling at both ends of the R series. The fact suggests that orbital effects dominate over the ordinary exchange-type dipolar interactions. The presumed quadrupolar ordering temperatures, on the other hand, scale with the squared Stevens factor along the R series, indicating that quadrupolar pair interactions via conduction electrons are responsible for the ordering.
journal title
Physical Review Letters
volume
Volume 83
issue
Issue 25
start page
5366
end page
5369
date of issued
1999-12-20
publisher
American Physical Society
issn
0031-9007
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) 1999 The American Physical Society.
relation url
department
Graduate School of Advanced Sciences of Matter