Physics – Condensed Matter – Superconductivity
Scientific paper
2008-04-10
Phys. Rev. B 76, 024516 (2007)
Physics
Condensed Matter
Superconductivity
12 pages, 1 table, 12 figures
Scientific paper
10.1103/PhysRevB.76.024516
Recent experiments [I.V. Grigorieva et al., Phys. Rev. Lett. 96, 077005 (2006)] on visualization of vortices using the Bitter decoration technique revealed vortex shells in mesoscopic superconducting Nb disks containing up to L=40 vortices. Some of the found configurations did not agree with those predicted theoretically. We show here that this discrepancy can be traced back to the larger disks with radii R ~ 1 to 2.5\mu m, i.e., R ~ 50-100\xi(0) used in the experiment, while in previous theoretical studies vortex states with vorticity L < 40 were analyzed for smaller disks with R ~ 5-20\xi(0). The present analysis is done for thin disks (mesoscopic regime) and for thick (macroscopic) disks where the London screening is taken into account. We found that the radius of the superconducting disk has a pronounced influence on the vortex configuration in contrast to, e.g., the case of parabolic confined charged particles. The missing vortex configurations and the region of their stability are found, which are in agreement with those observed in the experiment.
Misko V. R.
Peeters François M.
Xu Baoxi
No associations
LandOfFree
Formation and Size-Dependence of Vortex Shells in Mesoscopic Superconducting Niobium Disks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Formation and Size-Dependence of Vortex Shells in Mesoscopic Superconducting Niobium Disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation and Size-Dependence of Vortex Shells in Mesoscopic Superconducting Niobium Disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-705448