Light induced transitions of valley Chern numbers and flat bands in a non-twisted moire graphene-hexagonal boron nitride superlattice

Abstract

Motivated by the rich topology and interesting quasi-band structure of twisted moire materials subjected to light, we study a non-twisted moire material under the influence of light. Our work is in part motivated by a desire to find an easier-to-synthesize platform that can help experimentally elucidate the interesting physics of moiré materials coupled to light. Similar to twisted moire materials, we uncover rich topology and interesting band flattening effects, which we summarize in relevant plots such as a topological phase diagram. Our work demonstrates that much of the interesting phenomenology of twisted moire materials under the influence of electromagnetic waves seems to be generically present even in more experimentally accessible untwisted moire platforms, which remain highly tunable by light.

References in corpus (18)

• Terahertz-Field-Induced Ferroelectricity in Quantum Paraelectric SrTiO${}_3$
• Metastable ferroelectricity in optically strained $SrTi{O}_3$
• Electronic properties of graphene hexagonal boron nitride moiré superlattice
• Energy gap tuning in graphene on hexagonal boron nitride bilayer system
• Quantum Electrodynamic Control of Matter: Cavity-Enhanced Ferroelectric Phase Transition
• Buildup and dephasing of Floquet-Bloch bands on subcycle time scales
• Tracking ultrafast solid-state dynamics using high harmonic spectroscopy
• Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO${}_3$
• Quantum to classical crossover of Floquet engineering in correlated quantum systems
• Light-matter coupling and quantum geometry in moiré materials
• Quantum Floquet engineering with an exactly solvable tight-binding chain in a cavity
• Floquet Engineering of Nonequilibrium Valley-Polarized Quantum Anomalous Hall Effect with Tunable Chern Number
• Floquet-Engineered Topological Flat Bands in Irradiated Twisted Bilayer Graphene
• Effective Floquet Hamiltonians for periodically-driven twisted bilayer graphene
• Floquet-engineering topological transitions in a twisted transition metal dichalcogenide homobilayer
• Using ultrashort optical pulses to couple ferroelectric and ferromagnetic order in an oxide heterostructure
• Light-induced topological magnons in two-dimensional van der Waals magnets
• Time-resolved ARPES and optical transport properties of irradiated twisted bilayer graphene in steady-state