Pressure Evolution of the Magnetic Field induced Ferromagnetic Fluctuation through the Pseudo-Metamagnetism of CeRu2Si2

被引：16

作者：

Aoki, Dai ^{[1
]}

Paulsen, Carley ^{[2
]}

Matsuda, Tatsuma D. ^{[1
,3
]}

Malone, Liam ^{[4
]}

Knebel, Georg ^{[1
]}

Haen, Pierre ^{[2
]}

Lejay, Pascal ^{[2
]}

Settai, Rikio ^{[5
]}

Onuki, Yoshichika ^{[5
]}

Flouquet, Jacques ^{[1
]}

机构：

[1] CEA, SPSMS, INAC, F-38054 Grenoble, France

[2] CNRS UJF Grenoble, Inst Neel, F-38042 Grenoble, France

[3] JAEA, ASRC, Tokai, Ibaraki 3191195, Japan

[4] CNRS INSA UJF UPS, UPR 3228, LNCMI, F-31400 Toulouse, France

[5] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2011年 / 80卷 / 05期

关键词：

pseudo-metamagnetism; effective mass; CeRu2Si2; CeCoIn5; HEAVY-FERMION SYSTEMS; TRANSITION;

D O I：

10.1143/JPSJ.80.053702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Resistivity measurements performed under pressure in the paramagnetic ground state of CeRu2Si2 are reported. They demonstrate that the relative change of effective mass through the pseudo metamagnetic transition is invariant under pressure. The results are compared with the first order metamagnetic transition due to the antiferromagnetism of Ce0.9La0.1Ru2Si2 which corresponds to the "negative" pressure of CeRu2Si2 by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRu2Si2 and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.

引用

页数：4

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