Spin-orbit induced interference in polygon-structures

Details Spin-orbit induced interference in polygon-structures Spin-orbit induced interference in polygon-structures

2004-12-22

arxiv.org/abs/cond-mat/0412609v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

17 pages, 4 figures

Scientific paper

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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