Quantum Phenomenology for Heavy-Fermion Systems. I. Formulation of the Duality Model

Yoshio Kuramoto, Kazumasa Miyake

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)


A quantum mechanical phenomenology for heavy-fermion systems is formulated. The effective Lagrangian for low-energy excitations contains a localized spin-fluctuation part which is coupled with an itinerant fermion part. Each part represents the dual nature of strongly correlated f electrons. The coupling parameter is fixed by comparison with the Fermi-liquid theory for the Anderson model. The comparison also fixes the localized spin-fluctuation spectrum. As an advantage over the Fermi-liquid description the present model takes into account the RKKY interaction and non-linear effects of spin polarization. A formula for the magnetic equation of state is derived which is applicable to the metamagnetism and weak antiferromagnetism in heavy-fermion systems.

Original languageEnglish
Pages (from-to)2831-2840
Number of pages10
Journaljournal of the physical society of japan
Issue number8
Publication statusPublished - 1990 Jan 1


  • Anderson lattice
  • Kondo effect
  • duality
  • heavy fermion
  • metamagnetism
  • weak antiferromagnetism

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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