Evolution of the Kondo State of YbRh2Si2 Probed by High-Field ESR

被引：26

作者：

Schaufuss, U. ^{[1
]}

Kataev, V. ^{[1
]}

Zvyagin, A. A. ^{[1
,2
]}

Buechner, B. ^{[1
]}

Sichelschmidt, J. ^{[3
]}

Wykhoff, J. ^{[3
]}

Krellner, C. ^{[3
]}

Geibel, C. ^{[3
]}

Steglich, F. ^{[3
]}

机构：

[1] Inst Solid State Res, IFW Dresden, D-01171 Dresden, Germany

[2] NAS, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine

[3] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 07期

基金：

美国国家卫生研究院;

关键词：

ELECTRON-SPIN-RESONANCE; METALS; FREQUENCY;

D O I：

10.1103/PhysRevLett.102.076405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An electron spin resonance (ESR) study of the heavy fermion compound YbRh2Si2 for fields up to similar to 8 T reveals a strongly anisotropic signal in the Kondo state below similar to 25 K. A similarity between the T dependence of the ESR parameters and that of the specific heat and the Si-29 nuclear magnetic resonance data gives evidence that the ESR response is given by heavy fermions. Tuning the Kondo effect on the 4f states with magnetic fields similar to 2-8 T and temperature 2-25 K yields a gradual change of the ESR g factor and linewidth which reflects the evolution of the Kondo state in this Kondo lattice system.

引用

页数：4

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