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Spin-dependent transmission in waveguides with periodically modulated strength of the spin-orbit interaction

X. F. Wang·P. Vasilopoulos
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Abstract

The electron transmission $T$ is evaluated through waveguides, in which the strength of the spin-orbit interaction(SOI) $α$ is varied periodically, using the transfer-matrix technique. It is shown that $T$ exhibits a {\it spin-transistor} action, as a function of $α$ or of the length of one of the two subunits of the unit cell, provided only one mode is allowed to propagate in the waveguide. A similar but not periodic behavior occurs as a function of the incident electron energy. A transparent formula for $T$ through one unit is obtained and helps explain its periodic behavior. The structure considered is a good candidate for the establishment of a realistic spin transistor.

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X. F. Wang, P. Vasilopoulos. 2004-02-05. Spin-dependent transmission in waveguides with periodically modulated strength of the spin-orbit interaction. https://doi.org/10.1063/1.1597980

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