The recovery of superconductivity and the vortex generation in the case which was very similar to that of liquid 3He was investigated. In particular, the recovery of superconductivity in niobium subjected to an external magnetic field after the superconductivity was locally destroyed by heating was studied. As such, a ring-shaped normal conducting domain which was associated with a cluster of pinned Abrikosov vortices was found.
|Journal||Physical Review Letters|
|State||Published - 13 Jun 2003|
Bibliographical noteFunding Information:
We would like to thank J. Heil who developed the scanning apparatus and spent many hours in introducing us to its usage, P. Keppler and J. Major for growing ?>the niobium single crystal as well as E. Polturak, P.Esquinazi, and V. Kogan for interesting and helpful discussions. One of the authors (B. Ya. S.) specially thanks the Binational Israel-USA Foundation, Binational Israel-Germany Foundation, and the Minerva Centre at Bar-Ilan for permanent support.