Interplay of Kekulé distortions and laser fields in graphene
arXiv:2303.01947 · doi:10.5488/CMP.26.13505
Abstract
We study the interplay between a Kekulé patterned distortion in monolayer graphene and a monochromatic laser irradiation, focusing in the long wavelength approximation of its Landau level structure. Exploiting the symmetries of the system, we calculate in the static regime an exact analytical solution for the energy spectrum and its eigenstates, which in turn allows us to find close expressions for the polarizations in the valley and pseudospin degrees of freedom. We find that due to the valley-momentum coupling, the valley polarization exhibits a distinct magnetic response for the two -valley components. Owing to that, the introduction of the radiation field mixes the Landau levels, and it is shown that by tuning the system to resonance leads to a larger valley-polarization response as compared to the non-resonant scenario.
arXiv comment14 pages, 3 figures
References in corpus (40)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Topological Insulators
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- Quantum Spin Hall Effect in Graphene
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Quantum Spin Hall Insulator State in HgTe Quantum Wells
- Photonic Floquet Topological Insulators
- Floquet Topological Insulator in Semiconductor Quantum Wells
- Photovoltaic Hall effect in graphene
- Topological characterization of periodically-driven quantum systems
- Transport properties of non-equilibrium systems under the application of light: Photo-induced quantum Hall insulators without Landau levels
- Direct Measurement of the Zak phase in Topological Bloch Bands
- Electronic structure of silicon-based nanostructures
- Tunable Phase Boundaries and Ultra-Strong Coupling Superconductivity in Mirror Symmetric Magic-Angle Trilayer Graphene
- Light-induced anomalous Hall effect in graphene
- Floquet scattering theory of quantum pumps
- Electron fractionalization in two-dimensional graphenelike structures
- Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator
- Floquet-Bloch theory and topology in periodically driven lattices
- Light-field driven currents in graphene
- Floquet Spectrum and Transport Through an Irradiated Graphene Ribbon
- Merging of Dirac points in a two-dimensional crystal
- Tuning laser-induced bandgaps in graphene
- Dissipation and noise in adiabatic quantum pumps
- Topological transition of Dirac points in a microwave experiment
- Microscopic theory for the light-induced anomalous Hall effect in graphene
- Pseudospins and topological effects of phonons in a Kekule lattice
- Electron fractionalization for two-dimensional Dirac fermions
- Valley engineering by strain in Kekulé-distorted graphene
- Dynamical Floquet spectrum of Kekulé-distorted graphene under normal incidence of electromagnetic radiation
- Rabi Oscillations in Landau-Quantized Graphene
- Floquet Hofstadter Butterfly on the Kagome and Triangular Lattices
- Resonant transport in Kekule-distorted graphene nanoribbons
- Laser induced modulation of the Landau level structure in single-layer graphene
- Multi-flavor Dirac fermions in Kekulé-distorted graphene bilayers
- Light-modulated Josephson effect in Kekulé patterned graphene
- Modulation of Kekulé adatom ordering due to strain in graphene
- Driven Hofstadter Butterflies and Related Topological Invariants
- To gap or not to gap? Mass distortions and edge modes in graphene armchair nanoribbons