• Title/Summary/Keyword: iron pnictides

Search Result 3, Processing Time 0.019 seconds

Correlation Effect on the Electronic Structures of {Li, Na}FeAs ({Li, Na}FeAs 물질의 강상관계 전자 구조)

  • Ji, Hyo-Seok;Lee, Geun-Sik;Shim, Ji-Hoon
    • Progress in Superconductivity
    • /
    • v.14 no.1
    • /
    • pp.11-16
    • /
    • 2012
  • Based on fully self-consistent dynamical mean field theory (DMFT) method, we investigate electronic structure and Fermi surface nesting property of LiFeAs and NaFeAs, focusing on the correlation effect of iron 3d orbital. For LiFeAs, good nesting property by density functional theory (DFT) method is much suppressed by DFT+DMFT method due to the orbital-dependent renormalization magnitude. NaFeAs shows a similar behavior, but a better nesting is obtained than LiFeAs from DFT+DMFT Fermi surfaces. Our result is consistent with the observed superconducting (spin density wave) ground state of LiFeAs (NaFeAs).