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Volumn 82, Issue 2, 2010, Pages

Doping dependence of spin fluctuations and electron correlations in iron pnictides

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EID: 77956554905     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.82.024508     Document Type: Article
Times cited : (53)

References (46)
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    • (private communication).
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    • Still, the Fermi-surface geometry for n 5.5 in Fig. is very similar to that of KFe2 As2, which corresponds to 0.5 hole doping per Fe.
    • Still, the Fermi-surface geometry for n 5.5 in Fig. is very similar to that of KFe 2 As 2, which corresponds to 0.5 hole doping per Fe.
  • 36
    • 77956526088 scopus 로고    scopus 로고
    • The lowest temperature T=23 K comes from the limitation of 1024 Matsubara frequencies. More Matsubara frequencies are required for calculations at lower temperature.
    • The lowest temperature T = 23 K comes from the limitation of 1024 Matsubara frequencies. More Matsubara frequencies are required for calculations at lower temperature.
  • 37
    • 77956530972 scopus 로고    scopus 로고
    • First, we carry out the FLEX with modified self-energy at T=23 K, following Ref., and obtain the proper self-energy shift in each doping case. When we subtract the proper shift from the original tight-binding Hamiltonian h m k, the remainder, H m k = h m k - Σ m R (k,0 ), can be reconsidered the proper unperturbed Hamiltonian in each doping case. We apply the standard FLEX calculation without subtraction of the self-energy shift to this proper unperturbed Hamiltonian at each temperature. More precisely, Σ m R (k,0 ) = ik Σ m R (k,0 ) i km - should be ik Re Σ m R (k,0 ) i km -, where ik is a diagonal matrix to eliminate a trivial phase factor which appears in h m k, defined in Ref..
    • First, we carry out the FLEX with modified self-energy at T = 23 K, following Ref., and obtain the proper self-energy shift in each doping case. When we subtract the proper shift from the original tight-binding Hamiltonian h m k, the remainder, H m k = h m k - Σ m R (k, 0), can be reconsidered the proper unperturbed Hamiltonian in each doping case. We apply the standard FLEX calculation without subtraction of the self-energy shift to this proper unperturbed Hamiltonian at each temperature. More precisely, Σ m R (k, 0) = i k Σ m R (k, 0) i k m - should be i k Re Σ m R (k, 0) i k m -, where i k is a diagonal matrix to eliminate a trivial phase factor which appears in h m k, defined in Ref..
  • 38
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    • In LaFeAs ( O1-x Fx ) and Ba ( Fe1-x Cox ) 2 As2, x is n-6 on the electron-doped side. In Ba1-x Kx Fe2 As2, x/2 is 6-n on the hope-doped side.
    • In LaFeAs (O 1 - x F x) and Ba (Fe 1 - x Co x) 2 As 2, x is n - 6 on the electron-doped side. In Ba 1 - x K x Fe 2 As 2, x / 2 is 6 - n on the hope-doped side.
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    • L. Craco and M. S. Laad, Phys. Rev. B 80, 054520 (2009). 10.1103/PhysRevB.80.054520
    • (2009) Phys. Rev. B , vol.80 , pp. 054520
    • Craco, L.1    Laad, M.S.2
  • 43
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    • We do not show data at T=35 K in χsR (0,0 ) due to doubtful accuracy while an error in calculation of 1/ T1 T is averaged due to the summation over k.
    • We do not show data at T = 35 K in χ s R (0, 0) due to doubtful accuracy while an error in calculation of 1 / T 1 T is averaged due to the summation over k.


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