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arXiv · 1605.02814

Controlling Spin-Polarization in Graphene by Cloaking Magnetic and Spin-Orbit Scatterers

Diego Oliver·Tatiana G. Rappoport
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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.

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Diego Oliver, Tatiana G. Rappoport. 2016-05-17. Controlling Spin-Polarization in Graphene by Cloaking Magnetic and Spin-Orbit Scatterers. https://doi.org/10.1103/physrevb.94.045432

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