Spin-orbit effects in a graphene bipolar pn junction

Abstract

A graphene $pn$ junction is studied theoretically in the presence of both intrinsic and Rashba spin-orbit couplings. We show that a crossover from perfect reflection to perfect transmission is achieved at normal incidence by tuning the perpendicular electric field. By further studying angular dependent transmission, we demonstrate that perfect reflection at normal incidence can be clearly distinguished from trivial band gap effects. We also investigate how spin-orbit effects modify the conductance and the Fano factor associated with a potential step in both $nn$ and $np$ cases.

6 pages, 5 figures, conductance and Fano factor plots added

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Cited by in corpus (18)

• Spin-resolved scattering through spin-orbit nanostructures in graphene
• Charge transport in pn and npn junctions of silicene
• Spin-dependent Klein tunneling in graphene: Role of Rashba spin-orbit coupling
• Effect of back-gate on contact resistance and on channel conductance in graphene-based field-effect transistors
• Thermoelectric effects in graphene with local spin-orbit interaction
• Efficient quantum transport simulation for bulk graphene heterojunctions
• Features due to spin-orbit coupling in the optical conductivity of single-layer graphene
• Edge state effects in junctions with graphene electrodes
• Atomic and Electronic Structure of a Rashba $p$-$n$ Junction at the BiTeI Surface
• Graphene p-n junctions with nonuniform Rashba spin-orbit coupling
• Mesoscopic spin Hall effect along a potential step in graphene
• Theory of tunneling spectroscopy for chiral topological superconductors
• Quantum Spin Hall Effect in Graphene Nanoribbons: Effect of Edge Geometry
• Transport through quantum spin Hall insulator/metal junctions in graphene ribbons
• Quantum Transport of Dirac fermions in graphene with a spatially varying Rashba spin-orbit coupling
• Gate-induced carrier density modulation in bulk graphene: Theories and electrostatic simulation using Matlab pdetool
• Spin-orbit interaction and snake states in graphene $p$-$n$ junctions
• The influence of anisotropic Rashba spin-orbit coupling on current-induced spin polarization in graphene