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  4. The Energy Band Structure of A(x)Fe(2)Se(2) (A = K, Rb) Superconductors
 
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The Energy Band Structure of A(x)Fe(2)Se(2) (A = K, Rb) Superconductors

Journal
Frontiers In Physics
Date Issued
2014
Author(s)
Zabidi, NA
Azhan, MZ
Rosli, AN
Shrivastava, KN
DOI
10.1063/1.4866961
Abstract
We study the band structure of antiferromagnetic A(x)Fe(2)Se(2) (A = K, Rb) superconductors by using first-principles electronic structure calculations which is density functional theory. In the vicinity of iron-vacancy, we identify the valence electrons of A(x)Fe(2)Se(2) will be filled up to the Fermi level and no semiconducting gap is observed. Hence, the A(x)Fe(2)Se(2) is a metallic instead of semiconducting which leads to superconductivity in the orbital-selective Mott phase. Similarly, there is non-vanishing density of states at the Fermi level.
Subjects

Superconductivity

iron-pnictide

density-functional th...

band structure

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