Resonant reflection at magnetic barriers in quantum wires
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, Vol. 75, no 20, 205301- p.Article in journal (Refereed) Published
The conductance of a quantum wire containing a single magnetic barrier is studied numerically by means of the recursive Green's 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.
Place, publisher, year, edition, pages
2007. Vol. 75, no 20, 205301- p.
National CategoryPhysical Sciences
IdentifiersURN: urn:nbn:se:liu:diva-14775DOI: 10.1103/PhysRevB.75.205301OAI: oai:DiVA.org:liu-14775DiVA: diva2:25247