Elastic Screening of Pseudogauge Fields in Graphene
arXiv:2409.02250 · doi:10.1103/PhysRevLett.134.046404
Abstract
Lattice deformations in graphene couple to the low-energy electronic degrees of freedom as effective scalar and gauge fields. Using molecular dynamics simulations, we show that the optical component of the displacement field, i.e., the relative motion of different sublattices, contributes at equal order as the acoustic component and effectively screens the pseudogauge fields. In particular, we consider twisted bilayer graphene and corrugated monolayer graphene. In both cases, optical lattice displacements significantly reduce the overall magnitude of the pseudomagnetic fields. For corrugated graphene, optical contributions also reshape the pseudomagnetic field and significantly modify the electronic bands near charge neutrality. Previous studies based on continuum elasticity, which ignores this effect, have therefore systematically overestimated the strength of the strain-induced pseudomagnetic field. Our results have important consequences for the interpretation of experiments and design of straintronic applications.
7 + 15 pages, 4 + 12 figures (v3 has correct Fig. S8)
References in corpus (60)
- The electronic properties of graphene
- Energy gaps, topological insulator state and zero-field quantum Hall effect in graphene by strain engineering
- Graphene bilayer with a twist: electronic structure
- A tight-binding approach to uniaxial strain in graphene
- Observation of Van Hove singularities in twisted graphene layers
- Size, Shape and Low Energy Electronic Structure of Carbon Nanotubes
- Gauge fields in graphene
- Effects of Strain on Electronic Properties of Graphene
- Graphene: new bridge between condensed matter physics and quantum electrodynamics
- Continuum Model of the Twisted Bilayer
- Lattice relaxation and energy band modulation in twisted bilayer graphenes
- Strain engineering in semiconducting two-dimensional crystals
- Novel effects of strains in graphene and other two dimensional materials
- Band Structure of Twisted Bilayer Graphene: Emergent Symmetries, Commensurate Approximants and Wannier Obstructions
- Generating quantizing pseudomagnetic fields by bending graphene ribbons
- Relaxation and Domain Formation in Incommensurate 2D Heterostructures
- Band geometry of fractional topological insulators
- An Accurate and Transferable Machine Learning Potential for Carbon
- Strain fields in twisted bilayer graphene
- Gauge field induced by ripples in graphene
- Space dependent Fermi velocity in strained graphene
- Exact Landau Level Description of Geometry and Interaction in a Flatband
- Electron-Phonon Coupling and Raman Spectroscopy in Graphene
- Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
- Evidence of Flat Bands and Correlated States in Buckled Graphene Superlattices
- Theory of strain in single-layer transition metal dichalcogenides
- Electron-Phonon Interactions and the Intrinsic Electrical Resistivity of Graphene
- Pseudomagnetic fields and ballistic transport in a suspended graphene sheet
- Quantum Spin Hall Effect in Two-dimensional Crystals of Transition Metal Dichalcogenides
- Visualizing Strain-induced Pseudo magnetic Fields in Graphene through an hBN Magnifying Glass
- Gauge fields from strain in graphene
- Electrostatic interactions between graphene layers and their environment
- Gaps tunable by electrostatic gates in strained graphene
- Tuning the pseudospin polarization of graphene by a pseudo-magnetic field
- Phonon-limited resistivity of graphene by first-principle calculations: electron-phonon interactions, strain-induced gauge field and Boltzmann equation
- Nanoscale Strain Engineering of Giant Pseudo-Magnetic Fields, Valley Polarization and Topological Channels in Graphene
- Programmable Extreme Pseudomagnetic Fields in Graphene by a Uniaxial Stretch
- Midgap states in corrugated graphene: Ab-initio calculations and effective field theory
- Pseudo magnetic field in strained graphene: revisited
- Continuum model for relaxed twisted bilayer graphenes and moiré electron-phonon interaction
- Pseudo-electromagnetic fields in topological semimetals
- Large-area, periodic, and tunable intrinsic pseudo-magnetic fields in low-angle twisted bilayer graphene
- Electrically tunable gauge fields in tiny-angle twisted bilayer graphene
- Band structure engineering of ideal fractional Chern insulators
- Room temperature strain-induced Landau levels in graphene on a wafer-scale platform
- Transport properties of graphene across strain-induced nonuniform velocity profiles
- Strain Modulation of Graphene by Nanoscale Substrate Curvatures: A Molecular View
- Nano-engineered non-uniform strain in graphene
- Pseudo-magnetic field-induced ultra-slow carrier dynamics in periodically strained graphene
- Electronic structure of graphene hexagonal flake subjected to triaxial stress
- Band flattening in buckled monolayer graphene
- Electrical band flattening, valley flux, and superconductivity in twisted trilayer graphene
- Boundary Modes from Periodic Magnetic and Pseudomagnetic Fields in Graphene
- Topological flat bands in strained graphene: substrate engineering and optical control
- Correlations in the elastic Landau level of spontaneously buckled graphene
- Correlation-induced valley topology in buckled graphene superlattices
- Work function, deformation potential, and collapse of Landau levels in strained graphene and silicene
- Piezoelectricity in asymmetrically strained bilayer graphene
- Network model for periodically strained graphene
- Roses in the Nonperturbative Current Response of Artificial Crystals