Spin-polarized currents in corrugated graphene nanoribbons
arXiv:1908.07629 · doi:10.1016/j.carbon.2020.05.054
Abstract
We investigate the production of spin-polarized currents in corrugated graphene nanoribbons. Such corrugations are modeled as multiple regions with Rashba spin-orbit interactions, where concave and convex curvatures are treated as Rashba regions with opposite signs. Numerical examples for different separated Rashba-zone geometries calculated within the tight-binding approximation are provided. Remarkably, the spin-polarized current in a system with several Rashba areas can be enhanced with respect to the case with a single Rashba part of the same total area. The enhancement is larger for configurations with multiple regions with the same Rashba sign. This indicates that the increase of the spin polarization is due to the scattering of the electrons traversing regions with and without Rashba interaction. Additionally, we relate the appearance of the spin-polarized currents to novel symmetry relations between the spin-dependent conductances. These symmetries turn out to be a combination of different symmetry operations in real and spin spaces, as those occurring in non-planar systems like carbon nanotubes. Our results show that two-dimensional devices with Rashba spin-orbit interaction can be used as excellent spintronic devices in an all-electrical or mechanical setup.
arXiv comment13 pages, 7 figures
References in corpus (36)
- Quantum Spin Hall Effect in Silicene
- Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
- Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
- Quantum Anomalous Hall Effect in Graphene from Rashba and Exchange Effects
- Rashba effect in the graphene/Ni(111) system
- Ballistic spin-polarized transport and Rashba spin precession in semiconductor nanowires
- Graphene for spintronics: giant Rashba splitting due to hybridization with Au
- Strong modulation of optical properties in black phosphorus through strain-engineered rippling
- Strongly anisotropic spin relaxation in graphene/transition metal dichalcogenide heterostructures at room temperature
- Giant Spin Lifetime Anisotropy in Graphene Induced by Proximity Effects
- Proximity effects in bilayer graphene on monolayer WSe: Field-effect spin-valley locking, spin-orbit valve, and spin transistor
- Creating One-dimensional Nanoscale Periodic Ripples in a Continuous Mosaic Graphene Monolayer
- Strong Spin-Orbit Interaction Induced in Graphene by Monolayer WS
- Electronic superlattices in corrugated graphene
- Hierarchy of Graphene Wrinkles Induced by Thermal Strain Engineering
- Spin-orbit coupling and ESR theory for carbon nanotubes
- Curvature-induced anisotropic spin-orbit splitting in carbon nanotubes
- Gaussian deformations in graphene ribbons: flowers and confinement
- Zero Landau level in folded graphene nanoribbons
- Wrinkled few-layer graphene as highly efficient load bearer
- Strongly modulated transmission of a spin-split quantum wire with local Rashba interaction
- Symmetries of quantum transport with Rashba spin-orbit: Graphene spintronics
- Mosaic pattern formation in exfoliated graphene by mechanical deformation
- Helicoidal Fields and Spin Polarized Currents in CNT-DNA Hybrids
- Gate-controlled conductance through bilayer graphene ribbons
- Strong Modulation of Optical Properties in Rippled 2D GaSe via Strain Engineering
- Origami-based spintronics in graphene
- Rashba spin-orbit interaction in graphene armchair nanoribbons
- Spectral gap induced by structural corrugation in armchair graphene nanoribbons
- Electron spin inversion in gated silicene nanoribbons
- Tuning transport properties on graphene multi-terminal structures by mechanical deformations
- All-electrical production of spin-polarized currents in carbon nanotubes: Rashba spin-orbit interaction
- Electronic transport of folded graphene nanoribbons
- Interplay between symmetry and spin-orbit coupling in graphene nanoribbons
- Defect-enhanced Rashba spin-polarized currents in carbon nanotubes
- Flat Bands in Buckled Graphene Superlattices
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