Signatures of spin-related phases in transport through regular polygons

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.

4 pages, 4 figures. To appear in Phys. Rev. B

References in corpus (3)

• Spintronics: Fundamentals and applications
• Modulating Unpolarized Current in Quantum Spintronics: Visibility of Spin-Interference Effects in Multichannel Aharonov-Casher Mesoscopic Rings
• Rashba effect induced localization in quantum networks

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• The Geometrical Effects on Electronic Spectrum and Persistent Currents in Mesoscopic Polygon