Spin-dependent electron transport in waveguide with continuous shape

We study effects of the shape of a two-dimensional waveguide on the spin-dependent electron transport in the presence of spin-orbit coupling. The transition from classical motion to the tunneling regime can be controlled there by modulating the strength of spin-orbit coupling if the waveguide has a constriction. The spin precession strongly depends on the shape of the waveguide. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3636410]