Effect of an columnar defect on vortex configuration in a superconducting mesoscopic sample
AUTOR(ES)
Barba-Ortega, J., Becerra, Ariel, González, J.D.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2009-12
RESUMO
In this work we investigate the vortex dynamics in a square mesoscopic superconducting cylinder in the presence of an applied magnetic field parallel to its axis. The rectangular cross-section of the sample is L² and an engineered columnar defect of area d² at the center is taken into account; L = 12ξ(0) for all simulations while d varies discretely from 1ξ(0) to 10ξ(0). We study the magnetization and the vortex configuration, increasing the magnetic field from zero to the normal state field. We found that for d > 7ξ(0) no vortices in the superconductor area are possible. Also, if the size of the defect is reduced, the nucleation fields decrease.
Documentos Relacionados
- Vortex lattice of a long superconducting wire with a columnar defect
- Electronic structure of multiquantum giant vortex states in mesoscopic superconducting disks
- Superconducting properties of mesoscopic squares
- Vortex configurations on mesoscopic cylinders with square cross section
- Numerical study of the anisotropic properties of vortex motion in superconducting films with a periodic lattice of deffects
