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High-Temperature Superconductivity in Eu0.5K0.5Fe2As2

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arxiv 0807.2530 v2 pith:2ZXYVFLP submitted 2008-07-16 cond-mat.supr-con cond-mat.mtrl-sci

High-Temperature Superconductivity in Eu0.5K0.5Fe2As2

H. S. Jeevan , Z. Hossain , Deepa Kasinathan , Helge Rosner , C. Geibel , P. Gegenwart This is my paper
classification cond-mat.supr-con cond-mat.mtrl-sci
keywords superconductivitytransitionbelowhigh-temperatureordertemperaturewelladditional
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Subsequent to our recent report of SDW type transition at 190 K and antiferromagnetic order below 20 K in EuFe2As2, we have studied the effect of K-doping on the SDW transition at high temperature and AF order at low temperature. 50% K doping suppresses the SDW transition and in turn gives rise to high-temperature superconductivity below T_c = 32 K, as observed in the electrical resistivity, AC susceptibility as well as magnetization. A well defined anomaly in the specific heat provides additional evidence for bulk superconductivity.

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