Little-Parks effect in single YBaCuO sub-micron rings
arXiv:1002.2548 · doi:10.1103/PhysRevB.81.054505
Abstract
The properties of single submicron high-temperature superconductor (HTS) rings are investigated. The Little-Parks effect is observed and is accompanied by an anomalous behavior of the magnetic dependence of the resistance, which we ascribe to non-uniform vorticity (superfluid angular momentum) within the ring arms. This effect is linked to the peculiar HTS-relationship between the values of the coherence length and the London penetration depth.
14 pages, 3 figures