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Normal-state electrical resistivity and superconducting magnetic penetration depth in Eu0.5K0.5Fe2As2

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arxiv 0902.2190 v1 pith:LWTBT4RB submitted 2009-02-12 cond-mat.supr-con cond-mat.str-el

Normal-state electrical resistivity and superconducting magnetic penetration depth in Eu0.5K0.5Fe2As2

V.A. Gasparov , H.S. Jeevan , P. Gegenwart This is my paper
classification cond-mat.supr-con cond-mat.str-el
keywords dependencedepthmagneticpenetrationtemperaturearoundelectricalresistivity
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report measurements of the temperature dependence of the electrical resistivity, \rho(T), and magnetic penetration depth, \lambda(T), for polycrystalline samples of Eu_0.5K_0.5Fe_2As_2 with Tc=31 K. $\rho(T)$ follows a linear temperature dependence above T_c and bends over to a weaker temperature dependence around 150 K. The magnetic penetration depth, determined by radio frequency technique displays an unusual minimum around 4 K which is associated with short-range ordering of localized Eu3+ moments.

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