Ce-Site Dilution in the Ferromagnetic Kondo Lattice CeRh6Ge4

作     者：许嘉诚 苏杭 Rohit Kumar 罗帅帅 聂智勇 王安 杜锋 李蕊 Michael Smidman 袁辉球 

作者机构：Center for Correlated Matter and Department of PhysicsZhejiang University Zhejiang Province Key Laboratory of Quantum Technology and DeviceDepartment of PhysicsZhejiang University State Key Laboratory of Silicon MaterialsZhejiang University 

出 版 物：《Chinese Physics Letters》 (中国物理快报(英文版))

年 卷 期：2021年第38卷第8期

页      面：94-98页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 12034017 and 11974306) the National Key R&D Program of China (Grant Nos. 2017YFA0303100 and 2016YFA0300202) the Key R&D Program of Zhejiang Province China(Grant No. 2021C01002) 

摘      要：The heavy fermion ferromagnet CeRh6Ge4is the first example of a clean stoichiometric system where the ferromagnetic transition can be continuously suppressed by hydrostatic pressure to a quantum critical *** order to reveal the outcome when the magnetic lattice of CeRh6Ge4is diluted with non-magnetic atoms,this study reports comprehensive measurements of the physical properties of both single crystal and polycrystalline samples of *** increasing x,the Curie temperature decreases,and no transition is observed for x0.25,while the system evolves from exhibiting coherent Kondo lattice behaviors at low x to the Kondo impurity scenario at large ***,non-Fermi liquid behavior is observed over a wide doping range,which agrees well with the disordered Kondo model for 0.52≤x≤0.66,while strange metal behavior is revealed in the vicinity of xc=0.26.