关键字：SUPERCONDUCTIVITY

摘要：Electronic structure and structural stability of (Ba(0.75)Ae(0.25))Fe2As2 (Ae = Li, Na and Rb) have been studied by first principles calculations. After the introduction of Ae atoms, the magnetic moment was reduced. The Ae atoms doping increased the number of carriers in BaFe2As2 and caused the movement of the Fermi level, which led to the reconstruction of Fermi surface. The calculated results of formation energy, Gibbs free energy and phonon dispersion showed that Ae atoms were not easily soluble in BaFe2As2. BaFe2As2 doped system was unstable after Ae atoms were introduced. With the increase of ion radius of introduced Ae atoms, the stability of doped system decreased and doping became more difficult.

卷号：593

期号：wu

是否译文：否