Photoinduced topological phase transitions in strained black phosphorus

Abstract

Photoinduced topological phase transitions (TPTs) in black phosphorous (BP) under compressive strain were investigated by combining Floquet theory and first-principles calculations. Intriguing photo-dressed electronic states including Floquet-Dirac semimetals and Floquet topological insulators have been identified, which can be feasibly engineered by changing the direction, intensity and frequency of incident laser. Remarkably, tunable TPT from type-I to type-II Floquet-Dirac fermions can be realized by irradiating circularly polarized laser (CPL), with an origin rooted in optical Stark effect. Furthermore, the photoinduced Floquet-Dirac phases is shown to host topological surface states that exhibit nonequilibrium electron transport in a direction locked by the helicity of CPL. This work provides useful guidance for experimental observation of Floquet TPTs, and extends optoelectrionic applications of BP to nonequilibrium regime.

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• Floquet engineering of magnetic topological insulator MnBi${}_2$Te${}_4$ films
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• Self-Assembly of Isostatic Self-Dual Colloidal Crystals
• Photonic Dirac Nodal Line Semimetals Realized by Hyper-crystal
• Photoinduced Quantum Anomalous Hall States in the Topological Anderson Insulator
• Type-III Dirac Cones from Degenerate Directionally Flat Bands: Viewpoint from Molecular-Orbital Representation
• Quantum electrodynamics in anisotropic and tilted Dirac photonic lattices
• Floquet optical selection rules in black phosphorus
• Thermoelectric transport of type-I, II, and III massless Dirac fermions in two-dimensional lattice model
• Light-induced Odd-parity Magnetism in Conventional Collinear Antiferromagnets
• Chiral Floquet Engineering on Topological Fermions in Chiral Crystals
• Tuning of Bilayer Graphene Heterostructure by Horizontally Incident Circular Polarized Light
• Light-induced ultrafast glide-mirror symmetry breaking in black phosphorus
• Controllable Weyl Nodes and Fermi Arcs from Floquet Engineering Triple Fermions
• Effective Medium Model for Graphene Superlattices with Electrostatic and Magnetic Vector Potentials
• Fermionic analogue of black hole radiation with a super high Hawking temperature
• Four-dimensional Floquet topological insulator with an emergent second Chern number
• Floquet states of Valley-Polarized Metal with One-way Spin or Charge Transport in Zigzag Nanoribbons
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• Five-dimensional Floquet topological semimetals with emergent Yang monopoles and linked Weyl surfaces
• Complex Dirac-like Electronic Structure in Atomic Site Ordered Rh3In3.4Ge3.6
• Photoprotected spin Hall effect on graphene with substrate induced Rashba spin-orbit coupling
• Optically Induced Topological Phase Transition in two dimensional Square Lattice Antiferromagnet
• Octupolar edge state in an $e_g$ orbital system on a square lattice
• Photoinduced dc Hall current in few-layer black phosphorus with a gate-tunable Floquet gap
• Crossover in Electronic Specific Heat near Narrow-Sense Type-III Dirac Cones
• Floquet-Engineering Weyl Points and Linked Fermi Arcs from Straight Nodal Lines
• Landau levels in Weyl semimetal under uniaxial strain
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