Persistent currents in mesoscopic cavities and the effect of level crossings as random variables
Departamento de Física J.J. Giambiagi, Facultad de Ciencias Exactas y Naturales,
Universidad de Buenos
Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Published online: 15 April 2000
In the present article we perform analytical and numerical calculations related to persistent currents in 2D isolated mesoscopic annular cavities threaded by a magnetic flux. The system considered has a high number of open channels and therefore the single particle spectrum exhibits many level crossings as the flux varies. We determine the effect of the distribution of level crossings on the typical persistent current.
PACS: 73.23.Ra – Persistent currents
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000