Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Suppression of the vortex glass transition due to correlated defects with a persistent direction perpendicular to an applied magnetic field

Suppression of the vortex glass transition due to correlated defects with a persistent direction... It is found in terms of the lowest Landau level approach for the Ginzburg–Landau model that, in bulk type II superconductors with correlated defects, such as columnar defects, with a persistent direction perpendicular to an applied field H , a continuous vortex-glass transition should be depressed to a low enough temperature in the limit of weak point disorder. Based on this finding, remarkable reductions of the glass transition temperatures, seen in twin-free YBCO with columnar defects in H ⊥ c and twinned YBCO in H ‖ c , are discussed. It is pointed out that, in both of these two situations, the critical scaling of vanishing resistivities is anisotropic in spite of an isotropic scaling of correlation lengths and hence, makes it possible to determine two critical exponents by changing the relative angle between the current and the correlated defects. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Suppression of the vortex glass transition due to correlated defects with a persistent direction perpendicular to an applied magnetic field

Ikeda, Ryusuke; Myojin, Kiyokazu
Physical Review B , Volume 69 (18) – May 1, 2004
Download PDF
4 pages

Loading next page...
 
/lp/american-physical-society-aps/suppression-of-the-vortex-glass-transition-due-to-correlated-defects-0pBymjN7Fx

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Physical Society (APS)
Copyright
Copyright © 2004 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.69.180505
Publisher site
See Article on Publisher Site

Abstract

It is found in terms of the lowest Landau level approach for the Ginzburg–Landau model that, in bulk type II superconductors with correlated defects, such as columnar defects, with a persistent direction perpendicular to an applied field H , a continuous vortex-glass transition should be depressed to a low enough temperature in the limit of weak point disorder. Based on this finding, remarkable reductions of the glass transition temperatures, seen in twin-free YBCO with columnar defects in H ⊥ c and twinned YBCO in H ‖ c , are discussed. It is pointed out that, in both of these two situations, the critical scaling of vanishing resistivities is anisotropic in spite of an isotropic scaling of correlation lengths and hence, makes it possible to determine two critical exponents by changing the relative angle between the current and the correlated defects.

Journal

Physical Review B – American Physical Society (APS)

Published: May 1, 2004

There are no references for this article.