Study Of Coexistence Of Superconductivity And Antiferromagnetism In Smaso1xfxfe

Superconductivity and magnetism were previously thought as incompatible until the discoveryrnof some rare earth ternary compounds that show the coexistence of superconductivityrnand magnetism. In some of the recently discovered iron-based layered superconductors,rnsuperconductivity and magnetism coexist. In the present work we examine thernpossibility of coexistence of antiferromagnetism and superconductivity in samarium arsenidernoxide superconductor (SmAsO1À€€xFxFe). Using a model of the Hamiltonian andrnretarded double time Greens function formalism, we found expressions for superconductingrntransition temperature (Tc), superconductivity order parameter ( sc(T)), AFM orderrnparameter ( ), and AFM transition temperature (Tm). We obtained the phase diagramsrn(Tcvs ) and (Tmvs ) to obtain the region where both orders ,i.e, superconductivity andrnAFM coexist. The region under the intersection of the two merged graphs shows thatrnsuperconductivity and AFM coexist in the system(SmAsO1ð€€€xFxFe)

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