TITLE:
Theoretical Study of the Interplay of Superconductivity and Magnetism in FeAs Based Superconductors
AUTHORS:
Mesfin A. Afrassa, Poran Singh
KEYWORDS:
Superconductivity, Magnetism, Coexistence, Green’s Function
JOURNAL NAME:
World Journal of Condensed Matter Physics,
Vol.4 No.2,
March
31,
2014
ABSTRACT:
The interaction of superconductivity and magnetism is studied in iron based superconductor using the Hamiltonian consisting of the itinerant electrons, localized electrons moment, and s-f interaction. Using Greens function technique and equation of motion method, we have obtained an expressions for superconducting order parameters (△(T), △(0)) and critical temperature TC, which reduce to BCS result in the absence of magnetic interactions. The result of the calculations shows that superconductivity can coexist with magnetism in iron based superconductor below the critical temperature.