Evidence for Strong Quadrupolar Pair Interactions in Rare-Earth Palladium Bronzes RPd3S4

Physical Review Letters Volume 83 Issue 25 Page 5366-5369 published_at 1999-12-20
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Title ( eng )
Evidence for Strong Quadrupolar Pair Interactions in Rare-Earth Palladium Bronzes RPd3S4
Creator
Abe Kazuo
Takeda Naoya
Ishikawa Masayasu
Source Title
Physical Review Letters
Volume 83
Issue 25
Start Page 5366
End Page 5369
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.
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 1999-12-20
Rights
Copyright (c) 1999 The American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.83.5366
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.83.5366