Macroscopic Aharonov--Bohm Effect in Type-I Superconductors
Superconductivity
2007-05-23 v1 Mesoscale and Nanoscale Physics
Abstract
In type-I superconducting cylinders bulk superconductivity is destroyed above the first critical current. Below the second critical current the `type-I mixed state' displays fluctuation superconductivity which contributes to the total current. A magnetic flux on the axis of the cylinder can change the second critical current by as much as 50 percent so that half a flux quantum can switch the cylinder from normal conduction to superconductivity: the Aharonov--Bohm effect manifests itself in macroscopically large resistance changes of the cylinder.
Keywords
Cite
@article{arxiv.cond-mat/0501624,
title = {Macroscopic Aharonov--Bohm Effect in Type-I Superconductors},
author = {Catrin Ellenberger and Florian Gebhard and Wolfgang Bestgen},
journal= {arXiv preprint arXiv:cond-mat/0501624},
year = {2007}
}
Comments
five pages, one figure