Confirmation of the modified Bean model from simulations of superconducting vortices
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics, The University of Michigan, Ann Arbor, Michigan 48105-1120 (United States)
From a very simple description of vortices and pinning centers, we obtain nonlinear density profiles of vortices in type-II dirty superconductors that result from changing an external magnetic field. The results confirm a modified Bean model description of these systems, following the Kim empirical form that relates the current inside the material to the local magnetic field. We also obtain realistic magnetization hysteresis loops and examine the discrete evolution of the density profiles in our systems. This evolution is not continuous, but takes place by the occurrence of avalanches of vortices promoted by the addition or extraction of vortices from the edges of the system.
- DOE Contract Number:
- FG02-85ER45189
- OSTI ID:
- 5007177
- Journal Information:
- Physical Review Letters; (United States), Vol. 72:8; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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