Physics – Condensed Matter
Scientific paper
1994-07-18
Physics
Condensed Matter
30pages, 1 table and 7 figures (figures available - send requests to cris@npac.syr.edu)
Scientific paper
10.1103/PhysRevB.51.16276
We discuss the low-temperature dynamics of magnetic flux lines in high-temperature superconductors in the presence of a family of parallel twin planes that contain the $c$ axis. A current applied along the twin planes drives flux motion in the direction transverse to the planes and acts like an electric field applied to {\it one-dimensional} carriers in disordered semiconductors. As in flux arrays with columnar pins, there is a regime where the dynamics is dominated by superkink excitations that correspond to Mott variable range hopping (VRH) of carriers. In one dimension, however, rare events, such as large regions void of twin planes, can impede VRH and dominate transport in samples that are sufficiently long in the direction of flux motion. In short samples rare regions can be responsible for mesoscospic effects. The phase boundaries separating various transport regimes are discussed. The effect of tilting the applied field out of the twin planes is also considered. In this case the resistivity from flux motion is found to depend strongly on the tilt angle.
Marchetti Cristina M.
Vinokur Valeri M.
No associations
LandOfFree
Twin-Boundary Pinning of Superconducting Vortex Arrays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Twin-Boundary Pinning of Superconducting Vortex Arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Twin-Boundary Pinning of Superconducting Vortex Arrays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-644022