Charge and spin dynamics in antiferromagnetic metallic phase of iron-based superconductors

  • Tohyama T
  • Kaneshita E
  • Morinari T
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The electronic states, charge dynamics, and spin dynamics in the antiferromagnetic metallic phase of iron-arsenide superconductors are investigated by mean-field calculations for a five-band Hubbard model. Taking into account the difference of observed magnetic moments between LaFeAsO (1111 system) and BaFe2As2(122 system), we investigate the effect of the magnitude of the moments on band dispersion, optical conductivity, and dynamical spin susceptibility. We clarify how the magnitude affects on these quantities and predict different behaviors between the 1111 and 122 systems in the antiferromagnetic metallic phase. © 2010 Elsevier Ltd.All rights reserved.

Author-supplied keywords

  • A. Superconductors
  • D. Electronic structure
  • D. Magnetic properties
  • D. Optical properties

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  • Takami Tohyama

  • Eiji Kaneshita

  • Takao Morinari

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