Photo-induced valley currents in strained graphene
arXiv:1406.1118 · doi:10.1103/PhysRevB.90.075406
Abstract
The theoretical results are presented showing that strain-induced anisotropy of graphene spectrum gives rise to the valley currents under the illumination by normally incident light. The currents of the two graphene valleys are mutually compensated providing zero net electric current. The magnitude and direction of the valley currents are determined by the parameters of strain and light polarization. For not too high photon energy strain-induced valley current exceed that due to intrinsic warping of the graphene spectrum which suggests feasibility of strain-mediated valleytronics.
20 pages, 2 figures
References in corpus (22)
- Valley polarization in MoS2 monolayers by optical pumping
- The Valley Hall Effect in MoS2 Transistors
- Valley filter and valley valve in graphene
- Electronic States of Graphene Nanoribbons
- A tight-binding approach to uniaxial strain in graphene
- Graphene valley filter using a line defect
- Robust optical emission polarization in MoS2 monolayers through selective valley excitation
- Tilted anisotropic Dirac cones in quinoid-type graphene and alpha-(BEDT-TTF)_2I_3
- Gap opening in graphene by shear strain
- Symmetry-based approach to electron-phonon interactions in graphene
- Generation of pure bulk valley current in graphene
- Carrier Recombination and Generation Rates for Intravalley and Intervalley Phonon Scattering in Graphene
- Strained graphene: tight-binding and density functional calculations
- Theory of resonant multiphonon Raman scattering in graphene
- Valley filter in strain engineered graphene
- Electron-Hole Generation and Recombination Rates for Coulomb Scattering in Graphene
- Optical Properties of Strained Graphene
- Wave packet dynamics and valley filter in strained graphene
- Generation of valley polarized current in bilayer graphene
- Transmission through a boundary between monolayer and bilayer graphene
- Finite temperature inelastic mean free path and quasiparticle lifetime in graphene
- Non-abelian gauge fields and quadratic band touchings in molecular graphene