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Pairbreaking in the Type II-Clean Limit: A Description of H sub (c2) (T) in YBa sub 2 Cu sub 3 O sub 7 Thin-Film Superconductors

20 March 1989

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Measurements of the penetration length lambda of c-axis oriented thin films of YBa sub 2 Cu sub 3 O sub 7 in magnetic fields H as high as 14 T enable a determination of the transition temperature T sub c(H) by extrapolation to lambda=infinity. For fields in the range 1 T ~