Physics – Condensed Matter – Superconductivity
Scientific paper
2010-02-12
Phys. Rev. B 81, 054505 (2010)
Physics
Condensed Matter
Superconductivity
14 pages, 3 figures
Scientific paper
10.1103/PhysRevB.81.054505
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.
Beltram Fabio
Born Detlef
Carillo Franco
Montemurro Domenico
Papari Gianpaolo
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