Resonant reflection at magnetic barriers in quantum wires
arXiv:cond-mat/0701102 · doi:10.1103/PhysRevB.75.205301
Abstract
The conductance of a quantum wire containing a single magnetic barrier is studied numerically by means of the recursive Greens function technique. For sufficiently strong and localized barriers, Fano - type reflection resonances are observed close to the pinch-off regime. They are attributed to a magnetoelectric vortex-type quasibound state inside the magnetic barrier that interferes with an extended mode outside. We furthermore show that disorder can substantially modify the residual conductance around the pinch-off regime.
7 pages, 5 figures
References in corpus (3)
Cited by in corpus (9)
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