Decoupling between Field-Instabilities of Antiferromagnetism and Pseudo-Metamagnetism in Rh-Doped CeRu2Si2 Kondo Lattice

被引：21

作者：

Aoki, Dai ^{[1
]}

Paulsen, Carley ^{[2
]}

Kotegawa, Hisashi ^{[1
,3
]}

Hardy, Frederic ^{[4
]}

Meingast, Christoph ^{[4
]}

Haen, Pierre ^{[2
]}

Boukahil, Mounir ^{[1
]}

Knafo, William ^{[5
]}

Ressouche, Eric ^{[1
]}

Raymond, Stephane ^{[1
]}

Flouquet, Jacques ^{[1
]}

机构：

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

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

[3] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan

[4] Inst Festkorperphys, Karlsruher Inst Technol, D-76021 Karlsruhe, Germany

[5] CNRS UJF UPS INSA, Lab Natl Champs Magnet Intenses, UPR 3228, F-31400 Toulouse, France

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2012年 / 81卷 / 03期

关键词：

CeRu2Si2; Rh-doping; La-doping; antiferromagnetism; pseudo-metamagnetism; specific heat; resistivity; thermal expansion; magnetization; neutron diffraction; high pressure; HEAVY-FERMION COMPOUNDS; LOW-TEMPERATURE PROPERTIES; PHASE-DIAGRAM; NEUTRON-DIFFRACTION; TRANSITION; CE(RU0.85RH0.15)(2)SI-2; SCATTERING; CE(RU1-XRHX)2SI2; ALLOYS;

D O I：

10.1143/JPSJ.81.034711

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Doping Kondo lattice system CeRu2Si2 with Rh-8% (Ce(Ru0.92Rh0.08)(2)Si-2) leads to drastic consequences due to the mismatch of the lattice parameters between CeRu2Si2 and CeRh2Si2. A large variety of experiments clarifies the unusual properties of the ground state induced by the magnetic field from longitudinal antiferromagnetic (AF) mode at H = 0 to polarized paramagnetic phase in very high magnetic field. The separation between AF phase, paramagnetic phase and polarized paramagnetic phase varying with temperature, magnetic field and pressure is discussed on the basis of the experiments down to very low temperature. Similarities and differences between Rh and La substituted alloys are discussed with emphasis on the competition between transverse and longitudinal AF modes, and ferromagnetic fluctuations.

引用

页数：10

共 42 条

[1] Two different anisotropic SDW gaps in heavy-fermion system Ce0.87La0.13(Ru1-xRhx)2Si2 by resistivity [J].