Disordering transitions in vortex matter: Peak effect and phase diagram

Journal Article · Tue Aug 01 00:00:00 EDT 2000 · Physica C-Superconductivity and Its Applications

OSTI ID:834421

Olson, C J; Reichhardt, C; Zimanyi, G T; Gronbech-Jensen, Niels

Using numerical simulations of magnetically interacting vortices in disordered layered superconductors we obtain the static vortex phase diagram as a function of magnetic field and temperature. For increasing field or temperature, we find a transition from ordered straight vortices to disordered decoupled vortices. This transition is associated with a peak effect in the critical current as well as plastic flow of the vortices. For samples with increasing disorder strength the field at which the decoupling occurs decreases. Long range interactions in the c-axis are required to observe the effect.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director. Office of Advanced Scientific Computing Research. Mathematical Information and Computational Sciences Division; CLC and CULAR; National Science Foundation Contract DMR-9985978 (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 834421
• Report Number(s): LBNL-46710; R&D Project: K11503; TRN: US0407118
• Journal Information: Physica C-Superconductivity and Its Applications, Vol. 384, Issue 1-2; Other Information: Journal Publication Date: 01/15/2003; PBD: 1 Aug 2000
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
DECOUPLING
INTERACTION RANGE
MAGNETIC FIELDS
PHASE DIAGRAMS
PLASTICS
SUPERCONDUCTORS
VORTICES
DISORDER TRANSTITION VORTEX MATTER PEAK EFFECT PHASE DIAGRAM