Transmission spectra and valley processing of graphene and carbon nanotube superlattices with inter-valley coupling
arXiv:1701.00582 · doi:10.1088/1367-2630/18/11/113011
Abstract
We numerically investigate the electronic transport properties of graphene nanoribbons and carbon nanotubes with inter-valley coupling, e.g., in \sqrt{3}N \times \sqrt{3}N and 3N \times 3N superlattices. By taking the \sqrt{3} \times \sqrt{3} graphene superlattice as an example, we show that tailoring the bulk graphene superlattice results in rich structural configurations of nanoribbons and nanotubes. After studying the electronic characteristics of the corresponding armchair and zigzag nanoribbon geometries, we find that the linear bands of carbon nanotubes can lead to the Klein tunnelling-like phenomenon, i.e., electrons propagate along tubes without backscattering even in the presence of a barrier. Due to the coupling between K and K' valleys of pristine graphene by \sqrt{3} \times \sqrt{3} supercells,we propose a valley-field-effect transistor based on the armchair carbon nanotube, where the valley polarization of the current can be tuned by applying a gate voltage or varying the length of the armchair carbon nanotubes.
arXiv comment10 pages, 11 figures
References in corpus (37)
- The electronic properties of graphene
- Spintronics: Fundamentals and applications
- Chiral tunneling and the Klein paradox in graphene
- Electronic transport in two dimensional graphene
- Valley contrasting physics in graphene: magnetic moment and topological transport
- Valley filter and valley valve in graphene
- Andreev reflection and Klein tunneling in graphene
- Quantum interference and Klein tunneling in graphene heterojunctions
- Valley Dependent Optoelectronics from Inversion Symmetry Breaking
- Weak localisation magnetoresistance and valley symmetry in graphene
- Evidence of Klein tunneling in graphene p-n junctions
- Anisotropic Etching and Nanoribbon Formation in Single-Layer Graphene
- Graphene valley filter using a line defect
- Intervalley scattering, long-range disorder, and effective time reversal symmetry breaking in graphene
- Field-induced polarisation of Dirac valleys in bismuth
- Generation of pure bulk valley current in graphene
- Electronic transport properties of graphene nanoribbons
- Conductance calculations for quantum wires and interfaces: mode matching and Green functions
- Valley filter in strain engineered graphene
- Electronic Highways in Bilayer Graphene
- Prefect Klein tunneling in anisotropic graphene-like photonic lattices
- Valley Polarization in Si(100) at Zero Magnetic Field
- Tunable few-electron double quantum dots and Klein tunnelling in ultra-clean carbon nanotubes
- Controlled Growth of a Line Defect in Graphene and Implications for Gate-Tunable Valley Filtering
- Proximity effect in graphene-topological insulator heterostructures
- Proximity-induced giant spin-orbit interaction in epitaxial graphene on topological insulator
- Topological Anderson insulator phenomena
- Valley-based noise-resistant quantum computation using Si quantum dots
- A controllable valley polarization in Graphene
- Chiral Tunnelling in Twisted Graphene Bilayer
- Current partition at topological zero-line intersections
- Spin-dependent Klein tunneling in graphene: Role of Rashba spin-orbit coupling
- Single-Valley Engineering in Graphene Superlattices
- Klein tunneling in carbon nanostructures: a free particle dynamics in disguise
- Valley polarized transport in strained graphene based Corbino disc
- Valley Seebeck effect in gate tunable zigzag graphene nanoribbons
- Valley splitting in a Si/SiGe quantum point contact
Cited by in corpus (11)
- Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve and universal reversible logic gate
- Valley switch in a graphene superlattice due to pseudo-Andreev reflection
- Valley filtering effect of phonons in graphene with a grain boundary
- Thermal engineering in low-dimensional quantum devices: a tutorial review of nonequilibrium Green's function methods
- Perfect valley filter based on topological phase in disordered Monolayer Heterostructure
- First-principles study on the electronic and transport properties of periodically nitrogen-doped graphene and carbon nanotube superlattices
- Giant tunneling magnetoresistance based on spin-valley-mismatched ferromagnetic metals
- Realization of valley-spin polarized current via parametric pump in monolayer
- Transport features of topological corner states in honeycomb lattice with multihollow structure
- Electric field controlled valley-polarized photocurrent switch based on the circular bulk photovoltaic effect
- Valley current filtering and reversal by parallel side contacted armchair nanotubes