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Spin-orbit induced interference in polygon-structures

Marc J. van Veenhuizen·Takaaki Koga·Junsaku Nitta
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Abstract

We investigate the spin-orbit induced spin-interference pattern of ballistic electrons travelling along any regular polygon. It is found that the spin-interference depends strongly on the Rashba and Dresselhaus spin-orbit constants as well as on the sidelength and alignment of the polygon. We derive the analytical formulae for the limiting cases of either zero Dresselhaus or zero Rashba spin-orbit coupling, including the result obtained for a circle. We calculate the nonzero Dresselhaus and Rashba case numerically for the square, triangle, hexagon, and circle and discuss the observability of the spin-interference which can potentially be used to measure the Rashba and Dresselhaus coefficients.

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Marc J. van Veenhuizen, Takaaki Koga, Junsaku Nitta. 2004-12-22. Spin-orbit induced interference in polygon-structures. https://doi.org/10.1103/physrevb.73.235315

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