Low-temperature specific heat and magnetic susceptibility near the pressure-induced quantum phase transition in Ce7Ni3
Physical Review B - Condensed Matter and Materials Physics Volume 58 Issue 18
Page 12 095-12 099
published_at 1998-11-01
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| File | |
| Title ( eng ) |
Low-temperature specific heat and magnetic susceptibility near the pressure-induced quantum phase transition in Ce7Ni3
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| Creator |
Ohmoto Hirohisa
Pietrus Thomas
Löhneysen Hilbert Von
Koyama Keiichi
Hane Shingo
Goto Tsuneaki
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 58 |
| Issue | 18 |
| Start Page | 12 095 |
| End Page | 12 099 |
| 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.
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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 | 1998-11-01 |
| Rights |
Copyright (c) 1998 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.58.12095
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.62.12181
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