The Study of Coexistence of Superconductivity and Spin Density Wave (Sdw) in Smo1-Xfxfeas
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Date
2010-07
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Addis Ababa University
Abstract
Superconductivity and magnetism were previously thought as incompatible until the
discovery of some rare earth ternary compounds that shows the coexistence of
superconductivity and magnetism. In some of the recently discovered iron-based layered
superconductors superconductivity and magnetism are coexist. In the present work we
examine the possibility of coexistence of superconductivity and spin density wave in
samarium arsenide oxide superconductor (SmO1-xFxFeAs). Using the model of the
Hamiltonian and retarded double time green’s function formalism, we found mathematical
expression for superconducting transition temperature (Tc), superconductivity order
parameter (Δ ), spin density wave order parameter (M), and spin density wave transition
temperature (Tsdw). We merged the phase diagram of Tc vs. M and Tsdw vs. M, to obtain the
region where both orders i.e. superconductivity and spin density wave coexist. The region
under the intersection of the two merged graphs shows that superconductivity and spin
density wave coexist in the system
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The Study of Coexistence of Superconductivity