Pressure-induced non-Fermi-liquid behavior in a heavy-fermion compound Ce7Ni3 around the antiferromagnetic instability
Physical Review B - Condensed Matter and Materials Physics Volume 55 Issue 2
Page R692-R695
published_at 1997-01-01
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| File | |
| Title ( eng ) |
Pressure-induced non-Fermi-liquid behavior in a heavy-fermion compound Ce7Ni3 around the antiferromagnetic instability
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| Creator |
Kadomatsu Hideoki
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 55 |
| Issue | 2 |
| Start Page | R692 |
| End Page | R695 |
| Abstract |
Under increasing pressure, the Ne?el temperature of the heavy-fermion compound Ce7Ni3 (TN=1.9 K for P=O) decreases and vanishes near Pc≈0.33 GPa. Non-Fermi-liquid behavior appears at 0.4 GPa in both the specific heat and ac magnetic susceptibilitiy, Cm /T∼ - lnT and χac∝(1 - αT1/2). Above 0.62 GPa, the normal Fermi-liquid state recovers, as indicated by the T independence of CmT and the T2 dependence of the magnetic resistivity. The observed crossover with pressure is described by self-consistent renormalization theory of spin fluctuations (SF) in terms of the characteristic SF temperature T0 which increases by a factor of 20 for 0.33≤P≤0.75 GPa.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 1997-01-01 |
| Rights |
Copyright (c) 1997 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.55.R692
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.66.075127
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