Straightforward Probing of Polarization and Spin-Resolved Transmission through Potential Barriers in Silicene

Abstract EN

The low-energy physics of silicene is described by Dirac electrons with a strong spin-orbit interaction and its band structure can be controlled by an external electric field Ez.

We evaluate the electronic transmission through single and double barriers in silicene as a function of the angle of incidence θ, the electron energy E, and the strength of the field Ez.

We find a spin-resolved transmission, reflected in the polarization P, and a conductance qualitatively different in some ranges of E than that in graphene.

P exhibits quasiperiodic resonances versus θ in double-barrier structures.