Symmetries of quantum transport with Rashba spin-orbit: Graphene spintronics

Abstract

The lack of some spatial symmetries in planar devices with Rashba spin-orbit interaction opens the possibility of producing spin polarized electrical currents in absence of external magnetic field or magnetic impurities. We study how the direction of the spin polarization of the current is related to spatial symmetries of the device. As an example of these relations we study numerically the spin-resolved current in graphene nanoribbons. Different configurations are explored and analyzed to demonstrate that graphene nanoflakes may be used as excellent spintronic devices in an all-electrical setup.

8 pages, 7 figures, revised and extended version

References in corpus (10)

• Graphene Spintronics
• Electronic States of Graphene Nanoribbons
• 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
• Spin-Orbit Proximity Effect in Graphene
• Generation and Electric Control of Spin-Coupled Valley Current in WSe2
• Strong tuning of Rashba spin orbit interaction in single InAs nanowires
• Thermoelectric effects in graphene with local spin-orbit interaction
• Spin-helical Dirac states in graphene induced by polar-substrate surfaces with giant spin-orbit interaction: a new platform for spintronics

Cited by in corpus (7)

• All-Electrical Generation of Spin-Polarized Currents in Quantum Spin Hall Insulators
• A group-theoretic approach to the origin of chirality-induced spin selectivity in non-magnetic molecular junctions
• Electronic fractal patterns in building Sierpinski-triangles molecular systems
• Defect-enhanced Rashba spin-polarized currents in carbon nanotubes
• Enhancement of Rashba spin-orbit coupling by electron-electron interaction
• Charge-spin interconversion in graphene-based systems from density functional theory
• Spin Torque Oscillator and Magnetization Switching in double barrier Rashba Zeeman Magnetic Tunnel Junction