Physics
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999rpph...62..187w&link_type=abstract
Reports on Progress in Physics, Volume 62, Issue 2, pp. 187-236 (1999).
Physics
16
Scientific paper
Different models for the description of vortex motion in real type-II superconducting systems are introduced and applied to high- and low-0034-4885/62/2/003/img1 superconductors, ranging from pin breaking in homogeneous systems to different vortex shear models, which describe the plastic flow of vortices within percolation paths across the superconductor taking into account a distribution of superconducting properties. It is demonstrated, that collective pinning (for instance caused by oxygen vacancies) is sufficiently strong to provide the necessary intrinsic volume pinning force in high-0034-4885/62/2/003/img1 material if a single vortex approach is applied. Thus, inhomogeneities in the sample have to be considered, which lead to a flux shear dominated mechanism of vortex motion in real systems. This mechanism automatically explains a number of interesting phenomena and properties of high-0034-4885/62/2/003/img1 material: the Arrhenius-like phase transition, the `s'-shape of the voltage-current characteristics in the double logarithmic plot, the existence of a reversible regime close to 0034-4885/62/2/003/img4, and the correct temperature scaling, field scaling and magnitude of the volume pinning force. Finally, the inhomogeneity of the superconducting material is derived from experimental data via inversion schemes obtained for different models. The resulting distribution functions for local superconducting properties are comparable for all schemes. Possible explanations for the shape of the distributions are given.
No associations
LandOfFree
Mechanism of vortex motion in high-temperature superconductors 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 Mechanism of vortex motion in high-temperature superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism of vortex motion in high-temperature superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-949923