Scaling analysis of a model Hamiltonian for Ce3+ impurities in a cubic metal

Article

关键词: LOW-TEMPERATURE BEHAVIOR;    NON-FERMI-LIQUID;    RENORMALIZATION-GROUP;    ELECTRON MATERIALS;    KONDO PROBLEM;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.54.6494

来源: SCIE

【 摘 要 】

We introduce various exchange interactions in a model Hamiltonian for Ce3+ ions in cubic symmetry with three configurations (f(0).f(1).f(2)) With the impurity pseudospin S-I=1/2, our Hamiltonian includes (i) a one-channel S-c=1/2 Anderson model, (ii) a two-channel S-c=1/2 Anderson model, (iii) an unforeseen one-channel S-c=3/2 Anderson model with a nontrivial fixed point, (iv) a mixing exchange interaction between the Gamma(6,7) and the Gamma(8) conduction electron partial wave states, and (v) multiple conduction electron partial wave states. Using third-order scaling (perturbative renormalization group) analysis, we study the stability of various fixed points relevant to various exchange interactions for Ce3+ ions in cubic symmetry.

【 授权许可】

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