Controlling Spin-Polarization in Graphene by Cloaking Magnetic and Spin-Orbit Scatterers
arXiv:1605.02814 · doi:10.1103/PhysRevB.94.045432
Abstract
We consider spin-dependent scatterers with large scattering cross-sections in graphene -a Zeeman-like and an intrinsic spin-orbit coupling impurity- and show that a gated ring around them can be engineered to produce an effcient control of the spin dependent transport, like current spin polarization and spin Hall angle. Our analysis is based on a spin-dependent partial-waves expansion of the electronic wave-functions in the continuum approximation, described by the Dirac equation.
arXiv comment9 pages, 8 figures
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