Schematics of a -wide, -long, and -thick superconducting bridge with a -long LW channel.
Resistivity dependence on temperature for a YBCO bridge with (circles) and without (triangles) an -wide LW channel. The characteristics were measured using dc current. The inset shows semilog plots of the normalized resistivity vs temperature for the channeled bridge, recorded for bias currents ranging from .
A semilog plot of the critical current density as a function of temperature for a reference (triangles) and channeled (circles) bridge with the and values indicated. The solid lines represent the best fits to the power law dependence, using the same and two different and , as well as and 2.2 values for the reference and channeled bridges, respectively.
Exponent of the characteristics power law dependence of a pristine (triangles) and channeled (circles) bridge as a function of temperature. The arrows mark the possible vortex unbinding values, corresponding to .
Article metrics loading...
Full text loading...