Ballistic transport in one-dimensional loops with Rashba and Dresselhaus spin-orbit coupling

Details Ballistic transport in one-dimensional loops with Rashba and Dresselhaus spin-orbit coupling Ballistic transport in one-dimensional loops with Rashba and Dresselhaus spin-orbit coupling

2005-12-20

arxiv.org/abs/cond-mat/0512499v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 figures

Scientific paper

We discuss the combined effect of Rashba and Dresselhaus spin-orbit interactions in polygonal loops formed by quantum wires, when the electron are injected in a node and collected at the opposite one. The conditions that allow perfect localization are found. Furthermore, we investigate the suppression of the Al'tshuler--Aronov--Spivak oscillations that appear, in presence of a magnetic flux, when the electrons are injected and collected at the same node. Finally, we point out that a recent realization of a ballistic spin interferometer can be used to obtain a reliable estimate of the magnitude ratio of the two spin-orbit interactions.\bigskip

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