Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10727768 | Physics Letters A | 2013 | 6 Pages |
Abstract
We investigate the direction-dependent Andreev reflection of normal state-superconductor junctions both in monolayer and bilayer graphene with a single magnetic barrier by means of the Greenʼs function formalism. Such a barrier is capable of tuning the preferred angles of incidence for the Andreev retro-reflection. It enhances the specular reflection probability for certain angles of incidence in bilayer-based hybrid structures. We further study the impacts of magnetic barriers on the monolayer and bilayer hybrid structures by calculating the differential conductances within the Blonder-Tinkham-Klapwijk formula for experimental comparisons.
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Physics and Astronomy (General)
Authors
Hengyi Xu, Thomas Heinzel,