Aj. Fendrik et Mj. Sanchez, Persistent currents in mesoscopic cavities and the effect of level crossings as random variables, EUR PHY J B, 14(4), 2000, pp. 725-732
In the present article we perform analytical and numerical calculations rel
ated to persistent currents in 2D isolated mesoscopic annular cavities thre
aded by a magnetic flux. The system considered has a high number of open ch
annels and therefore the single particle spectrum exhibits many level cross
ings as the flux varies. We determine the effect of the distribution of lev
el crossings on the typical persistent current.