Crossed Andreev Reflection in a Graphene Bipolar Transistor
J. Cayssol
DOI 10.1103/PhysRevLett.100.147001 · Physical Review Letters
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Abstract
We investigate the crossed Andreev reflections between two graphene leads connected by a narrow superconductor. When the leads are, respectively, of the n and p type, we find that electron elastic cotunneling and local Andreev reflection are both eliminated even in the absence of any valley-isospin or spin polarizations. We further predict oscillations of both diagonal and cross conductances as a function of the distance between the graphene-superconductor interfaces.
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