The Study Of Coexistence Of Superconductivity And Spin Glass In Iron Pnictide(fe1y Sexte1x)

Superconductivity and magnetism were previously thought as incompatible until the dis-rncovery of some rare earth ternary compounds that shows the coexistence of superconduc-rntivity and magnetism. In some of the recently discovered iron-based layere. Superconduc-rntivity and magnetic order system are coexist, that occur in only 11 and 122 family. Thernpresent work we examine the possibility of coexistence of superconductivity and disorderrnof magnetic spin is called spin glass, when freeze the system that can show the supercon-rnductivity and spin glass coexist. In this present work we can examine the possibility ofrncoexistence of superconductivity and spin glass in detailed 11 family of Fe1+Y SeXTe1À€€Xrncompound. We show that spin glass like behavior is present in FST for b/n X=0.1 and X=rn0.15. We present evidence form magnetization measurement and characterized the short-rnrange order with neutron scattering. One of our main results in the short-range orderrndepend on structural as well as magnetic order. The factor of magnetic order exchange inrnlong range depend on temperature, pressure, number of doping and other external factorrndiscussed it. We found mathematical expression for superconductor transition TC, spinrnglass temperature Tg, Susceptibility X(q) and retardation time using for born approxi-rnmation and digamma function depend on wave vector(q) and cut o frequency(!) in thernregion coexistence of superconductivity and spin glass in Fe1+Y SeXTe1ð€€€X compound

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