Vortex dynamics and upper critical fields in ultrathin Bi films

Details Vortex dynamics and upper critical fields in ultrathin Bi films Vortex dynamics and upper critical fields in ultrathin Bi films

2001-03-12

arxiv.org/abs/cond-mat/0103258v2

Physics

Condensed Matter

Superconductivity

Phys Rev B, to be published Figure 6 replaced with correct figure

Scientific paper

10.1103/PhysRevB.63.214519

Current-voltage (I-V) characteristics of quench condensed, superconducting, ultrathin $Bi$ films in a magnetic field are reported. These I-V's show hysteresis for all films, grown both with and without thin $Ge$ underlayers. Films on Ge underlayers, close to superconductor-insulator transition (SIT), show a peak in the critical current, indicating a structural transformation of the vortex solid (VS). These underlayers, used to make the films more homogeneous, are found to be more effective in pinning the vortices. The upper critical fields (B$_{c2}$) of these films are determined from the resistive transitions in perpendicular magnetic field. The temperature dependence of the upper critical field is found to differ significantly from Ginzburg-Landau theory, after modifications for disorder.

Affiliated with

Also associated with

No associations

Rating

Vortex dynamics and upper critical fields in ultrathin Bi films 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 Vortex dynamics and upper critical fields in ultrathin Bi films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vortex dynamics and upper critical fields in ultrathin Bi films will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-401465