Optical Spectra in the Ferromagnetic States near the Charge Ordering

Sumio Ishihara, Naoto Nagaosa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The optical conductivity is studied numerically for the ferromagnetic metallic state close to the charge ordering observed in perovskite manganites. We focus on roles of the charge fluctuation on the incoherent component in the optical spectra, and consider the Coulomb interaction in the one- and two-dimensional spinless fermion models. The numerical results show that the incoherent part is not noticeable, and near the quarter-filling, most of the spectral weights are transferred to the Drude component. The discrepancy between our calculations and the experiments suggests that the orbital degrees of freedom play important roles.

Original languageEnglish
Pages (from-to)3678-3682
Number of pages5
Journaljournal of the physical society of japan
Volume66
Issue number11
DOIs
Publication statusPublished - 1997 Nov

Keywords

  • Charge ordering
  • Ferromagnetic metal
  • Manganese oxides
  • Optical conductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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