Destruction of the Global Phase Coherence in Ultrathin, Doubly Connected Superconducting Cylinders
Destruction of the Global Phase Coherence in Ultrathin, Doubly Connected Superconducting Cylinders
In doubly connected superconductors, such as hollow cylinders, the fluxoid is known to be quantized, allowing the superfluid velocity to be controlled by an applied magnetic flux and the sample size. The sample-size-induced increase in superfluid velocity has been predicted to lead to the destruction of superconductivity around half-integer flux …