Effect of twin boundary density on the vortex melting transition in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} single crystals
Description:
The authors present magnetotransport {rho}(H,T) measurements in clean untwinned and twinned crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} in magnetic fields up to 8 Tesla for H {parallel} c. In untwinned crystals, they show strong support for a vortex solid to liquid first order melting transition at a temperature T{sub m}, much below the mean field transition temperature T{sub c}(H), characterized by an extremely sharp drop in resistivity {rho}(T{sub m}) and the appearance of hystereti…
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Date:
January 1, 1994
Creator:
Kwok, W. K.; Fleshler, S.; Welp, U.; Crabtree, G. W. & Fendrich, J.
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UNT Libraries Government Documents Department