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Signatures of spin-related phases in transport through regular polygons

Dario Bercioux·Diego Frustaglia·Michele Governale
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Abstract

We address the subject of transport in one-dimensional ballistic polygon loops subject to Rashba spin-orbit coupling. We identify the role played by the polygon vertices in the accumulation of spin-related phases by studying interference effects as a function of the spin-orbit coupling strength. We find that the vertices act as strong spin-scattering centers that hinder the developing of Aharovov-Casher and Berry phases. In particular, we show that the oscillation frequency of interference pattern can be doubled by modifying the shape of the loop from a square to a circle.

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Dario Bercioux, Diego Frustaglia, Michele Governale. 2005-08-18. Signatures of spin-related phases in transport through regular polygons. https://doi.org/10.1103/physrevb.72.113310

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