Driven motion of vortices in superconductors

Conference · Fri Sep 01 04:00:00 EDT 1995

OSTI ID:198744

Crabtree, G W; Leaf, G K; Kaper, H G; Vinokur, V M; Koshelev, A E; Braun, D W; Levine, D M

The driven motion of vortices in the solid vortex state is analyzed with the time-dependent Ginzburg-Landau equations. In large-scale numerical simulations, carried out on the IBM Scalable POWERparallel (SP) system at Argonne National Laboratory, many hundreds of vortices are followed as they move under the influence of a Lorentz force induced by a transport current in the presence of a planar defect (similar to a twin boundary in YBa{sub 2}CU{sub 3}O{sub 7}). Correlations in the positions and velocities of the vortices in plastic and elastic motion are identified and compared. Two types of plastic motion are observed. Organized plastic motion displaying long-range orientational correlation and shorter-range velocity correlation occurs when the driving forces are small compared to the pinning forces in the twin boundary. Disorganized plastic motion displaying no significant correlation in either the velocities or orientation of the vortex system occurs when the driving and pinning forces axe of the same order.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 198744
• Report Number(s): ANL/MSD/CP--89009; CONF-9509255--3; ON: DE96007207; CNN: DMR91-20000
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
GINZBURG-LANDAU THEORY
HIGH-TC SUPERCONDUCTORS
LORENTZ FORCE
MAGNETIC FLUX