Conductance signatures of electron confinement induced by strained nanobubbles in graphene
arXiv:1503.08488 · doi:10.1039/c5nr03393d
Abstract
We investigate the impact of strained nanobubbles on the conductance characteristics of graphene nanoribbons using a combined molecular dynamics - tight-binding simulation scheme. We describe in detail how the conductance, density of states, and current density of zigzag or armchair graphene nanoribbons are modified by the presence of a nanobubble. In particular, we establish that low-energy electrons can be confined in the vicinity or within the nanobubbles by the delicate interplay between the pseudomagnetic field pattern created by the shape of the bubble, mode mixing, and substrate interaction. The coupling between confined evanescent states and propagating modes can be enhanced under different clamping conditions, which translates into Fano resonances in the conductance traces.
13 pages, 8 figures
References in corpus (18)
- A tight-binding approach to uniaxial strain in graphene
- Emergence of Superlattice Dirac Points in Graphene on Hexagonal Boron Nitride
- Magnetic confinement of massless Dirac fermions in graphene
- Origin of band gaps in graphene on hexagonal boron nitride
- Gauge field induced by ripples in graphene
- Conductance Quantization in Graphene Nanoribbons
- Hierarchy of Hofstadter states and replica quantum Hall ferromagnetism in graphene superlattices
- Spontaneous Strains and Gap in Graphene on Boron Nitride
- Peculiar Nature of Snake States in Graphene
- Graphene on boron-nitride: Moiré pattern in the van der Waals energy
- Gaussian deformations in graphene ribbons: flowers and confinement
- Pseudomagnetic fields in graphene nanobubbles of constrained geometry: A molecular dynamics study
- Bound states in inhomogeneous magnetic field in graphene: a semiclassical approach
- Coherent electronic transport in a multimode quantum channel with Gaussian-type scatterers
- Patched Green's function techniques for two dimensional systems: Electronic behaviour of bubbles and perforations in graphene
- Tunable resonances due to vacancies in graphene nanoribbons
- Resonant reflection at magnetic barriers in quantum wires
- Strain-induced modifications of transport in gated graphene nanoribbons
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- Electronic and optical properties of strained graphene and other strained 2D materials: a review
- Graphene Nanobubbles as Valley Filters and Beamsplitters
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- Graphene kirigami as a platform for stretchable and tunable quantum dot arrays
- Analytic approach to magneto-strain tuning of electronic transport through a graphene nanobubble: Perspectives for a strain sensor
- Low-energy theory for strained graphene: an approach up to second-order in the strain tensor
- Electron dynamics in strained graphene
- Straintronics beyond homogeneous deformation
- Current vortices in aromatic carbon molecules
- Graphene membrane as a pressure gauge
- Radio-frequency reflectometry in bilayer graphene devices utilizing micro graphite back-gates
- Topological phase-diagram of time-periodically rippled zigzag graphene nanoribbons
- Electron transport properties of graphene nanoribbons with Gaussian deformation
- A strain-engineered graphene qubit in a nanobubble
- Interplay between nanometer-scale strain variations and externally applied strain in graphene
- Resonant tunneling through protected quantum dots at phosphorene edges
- Thermoelectric transport in graphene under strain fields modeled by Dirac oscillators