2002/04/30 by Mahesh Chandran, R. T. Scalettar, Richard T. Scalettar +2 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.89.187001
published as Phys. Rev. Lett. 89 (18), 187001 (2002) · 4 pages, 4 figures. Problem of page size corrected
openalex publication_date 2002/10/10 · arxiv created 2004/04/16 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present results from numerical simulations of the transport of vortices in the zero-field-cooled (ZFC) and the field-cooled (FC) state of a type-II superconductor. In the absence of an applied current I, we find that the FC state has a lower defect density than the ZFC state, and is stable against thermal cycling. On the other hand, by cycling I, surprisingly, we find that the ZFC state is the stable state. The FC state is metastable as manifested by increasing I to the depinning current I(c), in which case the FC state evolves into the ZFC state. We also find that all configurations acquire a unique defect density at the depinning transition independent of the history of the initial states.