Theory of momentum-dependent magnetic response in heavy-fermion systems

Y. Kuramoto, T. Watanabe

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

A self-consistent dynamical theory is presented for the Anderson lattice. In a variational Lagrangian formulation a trial conduction-electron propagator is introduced. A variational principle leads to optimization of the propagator with the accuracy of O 1 2 where zn is the number of interacting neighbors. The extended non-crossing approximation (XNCA) is reproduced as a special case of the present theory. An integral equation is obtained for the dynamical susceptibility which incorporates the RKKY interaction and the Kondo effect. The closed-form solution is given in a case where perturbation theory is applicable.

Original languageEnglish
Pages (from-to)80-83
Number of pages4
JournalPhysica B+C
Volume148
Issue number1-3
DOIs
Publication statusPublished - 1987 Dec

ASJC Scopus subject areas

  • Engineering(all)

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