Goos–Hänchen effect of spin electron beams in the non-collinear double δ-barrier magnetic nanostructure

Since the charge transport has a sensitive property near the boundary, the GH shift and spin polarization are reexamined with a parallel double barrier magnetic nanostructure. It shows there exists a much stronger GH shift and spin polarization when the transmitted wave vector is much closer to zero...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2022, Vol.95 (1), Article 2
Main Authors: Guo, Lishuai, Li, Jianfeng, Zhu, Xiaolu, Tuo, Sheng
Format: Article
Language:English
Subjects:
Beam splitters
Boundary conditions
Broken symmetry
Charge transport
Complex Systems
Condensed Matter Physics
Electron beams
Electron spin
Electrons
Fluid- and Aerodynamics
Magnetic fields
Magnetic properties
Nanostructure
Physics
Physics and Astronomy
Polarization (spin alignment)
Regular Article - Solid State and Materials
Solid State Physics
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Summary:Since the charge transport has a sensitive property near the boundary, the GH shift and spin polarization are reexamined with a parallel double barrier magnetic nanostructure. It shows there exists a much stronger GH shift and spin polarization when the transmitted wave vector is much closer to zero by modulating the magnetic fields strength and incident energy. Furthermore, the influence on spin polarization is studied by changing the angle between two magnetic fields. It revealed that a stable spin polarization can be obtained by changing angle under some specific applied voltage and incident energies. Our results indicate a need for caution in boundary condition and tuning of angle. These interesting properties may provide good ideas to design and fabricate a spin beam splitters or filters. Graphical abstract The influence of the symmetry breaking of magnetic fields on the spin polarization is studied by changing the angle between both magnetic fields.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/s10051-021-00262-0