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 nonuniform 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.

Little-Parks effect in single nanoscale YBa2Cu3O6+x rings

CARILLO, Franco;PAPARI, GIANPAOLO;BORN, DETLEF;MONTEMURRO, DOMENICO;PINGUE, Pasqualantonio;BELTRAM, Fabio;
2010

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 nonuniform 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.
superconductivity; nanofabrication; ELECTRON DOUBLE-LAYERS, PHASE-TRANSITIONS, MAGNETIC-FIELD, ENERGY-SPECTRUM,
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/12885
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