Ce-Site Dilution in the Ferromagnetic Kondo Lattice CeRh_(6)Ge_(4)

作     者：Jia-Cheng Xu Hang Su Rohit Kumar Shuai-Shuai Luo Zhi-Yong Nie An Wang Feng Du Rui Li Michael Smidman Hui-Qiu Yuan 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 UniversityHangzhou 310058China Zhejiang Province Key Laboratory of Quantum Technology and DeviceDepartment of PhysicsZhejiang UniversityHangzhou 310058China State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhou 310058China 

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：79-83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：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) 

主　　题：Kondo magnetic system 

摘      要：The heavy fermion ferromagnet CeRh_(6)Ge_(4)is 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 CeRh_(6)Ge_(4)is diluted with non-magnetic atoms,this study reports comprehensive measurements of the physical properties of both single crystal and polycrystalline samples of La_(x)Ce_(1-x)Rh_(6)Ge_(4).With 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 x_(c)=0.26.