Recent Transport Studies of High Temperature Superconductivity at ISSP

Y. Iye

Chinese Journal of Physics

30卷2期（1992 / 04 / 01）

229 - 240

英文

Two topics from our recent transport studies on high Tc materials are reported. Systematic studies of correlation between the pressure dependence of the Hall effect and that of Tc have been undertaken in order to address to the question, whether the principal cause of the pressure dependence of Tc is through a change in the carrier density. Dissipation in the mixed state of YBa2Cu3O7-y studied as a function of magnetic field angle with respect to the basal plane have revealed an anomalous peak at θ~5˚, which is attributed to depinning of the lateral segment of a staircase flux line out of the intrinsic pinning potential.