Spin anisotropy and quantum Hall effect in the kagomé lattice: Chiral spin state based on a ferromagnet

K. Ohgushi, S. Murakami, N. Nagaosa

Research output: Contribution to journalArticle

315 Citations (Scopus)

Abstract

A ferromagnet with spin anisotropies on the two-dimensional (2D) kagomé, lattice is theoretically studied. This is a typical example of the flat-band ferromagnet. The Berry phase induced by the tilting of the spins opens the band gap and quantized Hall conductance σxy= ± e2/h is realized. This is the most realistic chiral spin state based on the ferromagnetism. We also discuss the implication of our results to the anomalous Hall effect observed in the metallic pyrochlore ferromagnets R2Mo2O7 (R=Nd, Sm, Gd).

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number10
DOIs
Publication statusPublished - 2000 Sep 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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