Tunable zero-energy transmission resonances in shifted graphene bilayer
arXiv:1311.3968 · doi:10.1103/PhysRevB.89.085426
Abstract
A graphene bilayer is known to perfectly reflect normally incident electrons due to their chirality. This is similar to Klein tunneling, which, in a monolayer, is instead responsible for perfect transmission at normal incidence. Stacking defaults turn each parabolic band crossing of a bilayer into pairs of Dirac cones. Here we show that, surprisingly, a stacking default (or shift) in a bilayer can result in perfect {\it transmission} at normal incidence as a result of Fabry-Pérot type resonances {\it at zero-energy}. These constructive interferences only happen for a specific orientation of the Dirac cones with respect to the incident electron and for quantized values of their separation in reciprocal space. Our results provide a way to control transmission resonances in undoped graphene bilayer structure by adjusting the layer stacking.
10 pages, 9 figures
References in corpus (15)
- Chiral tunneling and the Klein paradox in graphene
- Unconventional quantum Hall effect and Berry's phase of 2pi in bilayer graphene
- Quantum interference and Klein tunneling in graphene heterojunctions
- Quantum-limited shot noise in graphene
- Transport measurements across a tunable potential barrier in graphene
- Single Layer Behavior and Its Breakdown in Twisted Graphene Layers
- Reduction of Fermi velocity in folded graphene observed by resonance Raman spectroscopy
- Chiral Decomposition in the Electronic Structure of Graphene Multilayers
- Ballistic interferences in suspended graphene
- The structural properties of the multi-layer graphene/4H-SiC(000-1) system as determined by Surface X-ray Diffraction
- Ballistic transmission through a graphene bilayer
- Graphene nanoribbons from unzipped carbon nanotubes: atomic structures, Raman spectroscopy and electrical properties
- Minimal conductivity in bilayer graphene
- Topologically Protected Zero Modes in Twisted Bilayer Graphene
- Strained bilayer graphene: Band structure topology and Landau level spectrum
Cited by in corpus (5)
- Transport properties of bilayer graphene in a strong in-plane magnetic field
- In-plane magnetoelectric response in bilayer graphene
- Confined states in graphene quantum blisters
- Optical Properties of Graphene in Magnetic and Electric fields
- Magic-angle twisted bilayer graphene under orthogonal and in-plane magnetic fields