Upper critical field in {Ba$_{1-x}$K$_x$BiO$_3$}: magnetotransport versus magnetotunneling

A.G.M.Jansen; C.Escribe-Filippini; J. Marcus; P. Samuely; P. Szabo; P. Wyder; T. Klein

arxiv: cond-mat/0103183 · v1 · submitted 2001-03-08 · ❄️ cond-mat.supr-con

Upper critical field in {Ba_(1-x)K_xBiO₃}: magnetotransport versus magnetotunneling

P. Samuely , P. Szabo , T. Klein , A.G.M.Jansen , J. Marcus , C.Escribe-Filippini , P. Wyder This is my paper

classification ❄️ cond-mat.supr-con

keywords criticalfieldtunnelinguppercomparisondatadependencedetermine

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Elastic tunneling is used as a powerful direct tool to determine the upper critical field $H_{c2}(T)$ in the high-$T_c$ oxide Ba$_{1-x}$K$_x$BiO$_3$. The temperature dependence of $H_{c2}$ inferred from the tunneling follows the Werthamer-Helfand-Hohenberg prediction for type-II superconductors. A comparison will be made with resistively determined critical field data.

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Upper critical field in {Ba_(1-x)K_xBiO₃}: magnetotransport versus magnetotunneling

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