Volume 35, Number 8, September II 1996
|Page(s)||597 - 602|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Peak effect in superconductors: melting of Larkin domains
NEC Research Institute, 4 Independence Way, Princeton,
NJ 08540, USA
2 Department of Physics, Princeton University, Princeton, NJ 08544, USA
Accepted: 12 July 1996
Motivated by the recent observations of the peak effect in high-Tc YBCO superconductors, we re-examine the origin of this unusual phenomenon. We propose that the sharp peak in the critical current as a function of temperature or magnetic field is an interesting manifestation of vortex-lattice melting in the presence of weak random pinning. Specifically, the rise of the critical current with increasing temperature or field is a result of a crossover from the Larkin pinning length to a length scale set by thermal fluctuations.
PACS: 74.60.Jg – Critical currents / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics / 64.70.Dv – Solid-liquid transitions
© EDP Sciences, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.