Browsing by Author "Kwok, W. K."
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Article
The effect of correlated and point defects on the vortex lattice melting transition in single-crystal YBa2Cu3O7-δ
Kwok, W. K.; Fendrich, J.; Fleshler, S.; Welp, U.; Downey, J.; Crabtree, G. W.; Giapintzakis, John (1994)The vortex melting transition Tm in several untwinned and twinned crystals is measured resistively in fields up to 8T. A Lindemann criterion for vortex lattice melting is obtained in addition to a sharp hysteresis in the ...
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Article
Vortex liquid state in an electron irradiated untwinned YBa2Cu3O7-δ crystal
Fendrich, J. A.; Kwok, W. K.; Giapintzakis, John; Beek, C. J. Van Der; Vinokur, V. M.; Fleshler, S.; Welp, U.; Viswanathan, H. K.; Crabtree, G. W. (1995)We report on the temperature and field dependencies of the resistivity of an untwinned YBa2Cu3O7-δ single crystal before and after 1 MeV electron irradiation in fields up to 8 T. We show, for the first time, direct suppression ...