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ID 19298
file
creator
Ohmoto, Hirohisa
Pietrus, Thomas
Löhneysen, Hilbert Von
Koyama, Keiichi
Hane, Shingo
Goto, Tsuneaki
abstract
The pressure-induced magnetic-nonmagnetic transition in a stoichiometric compound Ce7Ni3 was investigated using measurements of the specific heat C and the magnetic susceptibility χ on single crystals down to 0.07 K. The results show that the Ne?el temperature TN decreases linearly with increasing pressure, and vanishes at Pc=0.39 GPa. At 0.36 GPa < Pc, the Cm/T curve deviates strongly from -lnT dependence below 0.5 K, and exhibits a broad maximum around 0.15 K. At 0.43 GPa > Pc, while, on the other hand, a T-independent behavior appears below 0.2 K. These findings indicate that the -lnT dependence observed near Pc between 0.5 and 6 K is a crossover phenomenon to a Fermi-liquid ground state. However, the continuous increase of χ down to 0.09 K at 0.43 GPa is at variance with conventional Fermi-liquid theory.
journal title
Physical Review B - Condensed Matter and Materials Physics
volume
Volume 58
issue
Issue 18
start page
12 095
end page
12 099
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
text version
publisher
rights
Copyright (c) 1998 The American Physical Society.
relation url
department
Graduate School of Advanced Sciences of Matter



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