Optical conductivity of antiferromagnetic metallic chromium: Mean-field calculation for the multi-orbital Hubbard model

Koudai Sugimoto, Takami Tohyama, Eiji Kaneshita, Kenji Tsutsui

Research output: Contribution to journalArticle

Abstract

The discovery of iron-pnictide superconductors has enhanced the attraction of the antiferromagnetic metallic phase of multi-orbital systems. We focus on Cr, which is representative antiferromagnetic metal with multi-orbitals like the parent iron-pnictide superconductors. We calculate the band structure and the density of states in commensurate antiferromagnetic Cr by using the spindensity wave for the multi-orbital Hubbard model in the mean-field approximation. The optical conductivity is calculated by making use of the band structure. A peak structure appears in the antiferromagnetic phase, which is consistent with experimental data. This supports the validity of our model.

Original languageEnglish
Pages (from-to)632-635
Number of pages4
JournalJournal of the Korean Physical Society
Volume63
Issue number3
DOIs
Publication statusPublished - 2013 Aug 1
Externally publishedYes

Keywords

  • Antiferromagnetism
  • Cr
  • Multi-orbital
  • Optical conductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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