Itinerant versus localized heavy-electron magnetism

Shintaro Hoshino, Yoshio Kuramoto

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The nature of the itinerant-localized transition of heavy electrons is clarified for the Kondo-Heisenberg lattice at finite temperatures. The phase diagram and electronic structure are derived by means of the continuous-time quantum Monte Carlo method combined with the dynamical mean-field theory. Around the itinerant-localized transition inside the antiferromagnetic phase, nearly flat bands appear on the Fermi surface with an almost vanishing quasiparticle renormalization factor. At the same time, there emerges a strong local magnetic fluctuation with a minute energy scale. Considering both antiferromagnetic and ferromagnetic Heisenberg interactions, a coherent understanding is achieved on rich phase diagrams observed in CeRh1-xCoxIn5, CeRu2(SixGe1-x)2, UGe2, and CeT2Al10 (T=Fe, Ru, Os).

Original languageEnglish
Article number026401
JournalPhysical Review Letters
Volume111
Issue number2
DOIs
Publication statusPublished - 2013 Jul 9

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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