Ytterbium ESR in a lattice with weak coupling: the case of YbPt2Sn

International Conference on Strongly Correlated Electron Systems 2014

Sichelschmidt, J.^1 ; Gruner, T.^1 ; Jang, D.^1 ; Steppke, A.^1 ; Brando, M.^1 ; Mitsumoto, K.^2 ; Geibel, C.^1

Max Planck Institute for Chemical Physics of Solids, Dresden, Germany^1

Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-no-cho, Niigata

950-2181, Japan^2

关键词: Basal planes;    Crystal electric field;    G factors;    Intrinsic nature;    Kondo lattices;    Magnetization data;    Temperature dependence;    Weak couplings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012017/pdf
DOI  :  10.1088/1742-6596/592/1/012017

来源: IOP

【 摘 要 】

We observed a well-defined Yb3+electron spin resonance (ESR) line in YbPt2Sn. The single crystal ESR data show strongly anisotropic g factors, being largest in the basal plane, in agreement with magnetization data. This proves the intrinsic nature of the ESR signal. Analysis of these results indicates the crystal electric field ground state to be the Γ7doublet. Although the Kondo and intersite interactions are at least one order of magnitude weaker than in the Kondo lattices YbRh2Si2and YbIr2Si2, the temperature dependence of linewidth and g factors show qualitative similarities.