Signatures of spin-related phases in transport through regular polygons

Dario Bercioux, Diego Frustaglia, and Michele Governale
Phys. Rev. B 72, 113310 – Published 26 September 2005

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 Aharonov-Casher and Berry phases. In particular, we show that the oscillation frequency of the interference pattern can be doubled by modifying the shape of the loop from a square to a circle.

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  • Received 31 May 2005

DOI:https://doi.org/10.1103/PhysRevB.72.113310

©2005 American Physical Society

Authors & Affiliations

Dario Bercioux

  • Institut für Theoretische Physik, Universität Regensburg, D-93040, Germany and Coherentia-INFM & Dipartimento di Scienze Fisiche, Università degli Studi “Federico II,” I-80126 Napoli, Italy

Diego Frustaglia and Michele Governale

  • NEST-INFM & Scuola Normale Superiore, I-56126 Pisa, Italy

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Issue

Vol. 72, Iss. 11 — 15 September 2005

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