Geometric phases and Andreev reflection in hybrid rings
Diego Frustaglia, Fabio Taddei, Rosario Fazio
DOI 10.1103/PhysRevB.72.125321 · Physical Review B
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Abstract
We study the Andreev reflection of a hybrid mesoscopic ring in the presence of a crownlike magnetic texture. By calculating the linear-response conductance as a function of the Zeeman splitting and the magnetic flux through the ring, we are able to identify signatures of the Berry phase acquired by the electrons during transport. This is proposed as a novel detection scheme of the spin-related Berry phase, having the advantage of a larger signal contrast and robustness against ensemble averaging.
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