Evanescent states in quantum wires with Rashba spin-orbit coupling

Serra, Ll.; Sánchez, D.; López, R.
Physical Review B 76, 045339 (1-8) (2007)

We discuss the calculation of evanescent states in quasi-one-dimensional quantum wires in the presence of Rashba spin-orbit interaction. We suggest a computational algorithm devised for cases in which longitudinal and transverse motions are coupled. The dispersion relations are given for some selected cases, illustrating the feasibility of the proposed computational method. As a practical application, we discuss the solutions for a wire containing a potential step.

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