J.C. Marinace
JES
We report the results of temperature- and field-dependent transport measurements on sintered, polycrystalline samples of YBa2Cu3O7-x. A study of the E-J curves indicates a second-order phase transition, at low current density in the coupling of the grains, that exhibits the scaling behavior predicted for a vortex glass. The ohmic resistance at low current is observed to vanish at a nonzero temperature, and the E-J curves exhibit power-law behavior at that temperature. Below this temperature the E-J curves are consistent with a true critical current with zero linear resistance. The qualitative features of the data and the values of the critical exponents are consistent with the predictions of the vortex-glass theory. Our findings cannot be explained by the predictions of conventional flux-creep models. © 1991 The American Physical Society.
J.C. Marinace
JES
Shiyi Chen, Daniel Martínez, et al.
Physics of Fluids
Andreas C. Cangellaris, Karen M. Coperich, et al.
EMC 2001
Corneliu Constantinescu
SPIE Optical Engineering + Applications 2009