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- Title
Conductance dips and spin precession in a nonuniform waveguide with spin-orbit coupling.
- Authors
Malyshev, A.; Kozulin, A.
- Abstract
An infinite waveguide with a nonuniformity, a segment of finite length with spin-orbit coupling, is considered in the case when the Rashba and Dresselhaus parameters are identical. Analytical expressions have been derived in the single-mode approximation for the conductance of the system for an arbitrary initial spin state. Based on numerical calculations with several size quantization modes, we have detected and described the conductance dips arising when the waves are localized in the nonuniformity due to the formation of an effective potential well in it. We show that allowance for the evanescent modes under carrier spin precession in an effective magnetic field does not lead to a change in the direction of the average spin vector at the output of the system.
- Subjects
ELECTRIC admittance; PRECESSION; NON-uniform motion; WAVEGUIDES; SPIN-orbit interactions; QUANTIZATION (Physics)
- Publication
Journal of Experimental & Theoretical Physics, 2015, Vol 121, Issue 1, p96
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776115060102