Controllable Goos-Hänchen shifts and spin beam splitter for ballistic electrons in a parabolic quantum well under a uniform magnetic field
arXiv:1103.4995 · doi:10.1103/PhysRevB.83.195409
Abstract
The quantum Goos-Hänchen shift for ballistic electrons is investigated in a parabolic potential well under a uniform vertical magnetic field. It is found that the Goos-Hänchen shift can be negative as well as positive, and becomes zero at transmission resonances. The beam shift depends not only on the incident energy and incidence angle, but also on the magnetic field and Landau quantum number. Based on these phenomena, we propose an alternative way to realize the spin beam splitter in the proposed spintronic device, which can completely separate spin-up and spin-down electron beams by negative and positive Goos-Hänchen shifts.
arXiv comment6 pages, 6 figures
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- Spin- and valley-dependent Goos-Hanchen effect in silicene and gapped graphene structures
- Goos-Hänchen Shifts in Graphene with Spatially Modulated Potential
- Effect of surface roughness on the Goos-Hänchen shift
- Scattering of relativistic electrons and analogies with optical phenomena: A study of longitudinal and transverse shifts at step potentials