Electron spin inversion in gated silicene nanoribbons

Abstract

We study locally gated silicene nanoribbons as spin active devices. We find that the gated segments of nanoribbons with zigzag edge can be used to perform a spin inversion for the electron spins injected with an in-plane orientation. The strong intrinsic spin-orbit coupling for low Fermi energy in presence of an external vertical electric field provides a fast spin precession around the axis perpendicular to the silicene plane. The spin inversion length can be as small as 10 nm. On the other hand in the armchair nanoribbons the spin inversion occurs via the Rashba effect which is weak and the spin inversion lengths are of the order of $\mu$m.

References in corpus (13)

• Germanene: a novel two-dimensional Germanium allotrope akin to Graphene and Silicene
• Valley-Polarized Metals and Quantum Anomalous Hall Effect in Silicene
• Structural and electronic properties of germanene on MoS${}_2$
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Giant Spin Lifetime Anisotropy in Graphene Induced by Proximity Effects
• Colossal negative magnetoresistance in dilute fluorinated graphene
• Evidence for spin-flip scattering and local moments in dilute fluorinated graphene
• Spin-orbit coupling in fluorinated graphene
• Spin-polarized current induced by a local exchange field in a silicene nanoribbon
• Interference features in scanning gate conductance maps of quantum point contacts with disorder
• Electronic Transport in Graphene with Aggregated Hydrogen Adatoms
• All-Electrical Generation of Spin-Polarized Currents in Quantum Spin Hall Insulators
• Band inversion at critical magnetic fields in a silicene quantum dot

Cited by in corpus (7)

• Spin-valley polarized edge states and quantum anomalous Hall states controlled by side potential in 2D honeycomb lattices
• Band bending and zero-conductance resonances controlled by edge electric fields in zigzag silicene nanoribbons
• Spin-polarized currents in corrugated graphene nanoribbons
• Spin and valley manipulation in single and double electrostatic silicene quantum dots
• Aharonov-Bohm oscillations of four-probe resistance in topological quantum rings in silicene and bilayer graphene
• Topologically protected wave packets and quantum rings in silicene
• Electron interferometry and quantum spin Hall phase in silicene