Light-induced topological phases in thin films of magnetically doped topological insulators

Abstract

We study the photon-dressed electronic band structure of topological insulator thin films which could be also doped doped by magnetic impurities in response to an off-resonance time-periodic electromagnetic field. The thin films irradiated by a circularly polarized light undergo phase transition, in a driven system made by and a fascinating feature of distinct phases emerges in the phase diagram depending on the parameters such as frequency, intensity and polarization of the light. As a particular case, quantum anomalous Hall insulator phase is induced purely by the light-induced mass term with no need to any external magnetic field or even magnetization arising from the doped-doping magnetic impurities. Moreover, a novel phase, quantum pseudo-spin Hall insulator, emerges in the phase diagram leading to anisotropic helical edge states with zero total Chern number. We verify these achievements in the phase diagrams are supported by numerical calculations for a nanoribbon of the thin film for which the edge mode behavior is observed at several points on the phase diagram. The emergence of the mentioned topological phases and the edge modes are further confirmed by both calculating the Hall conductivity by means of the Kubo formula and the Chern number of each band. The effect of light parameters on the Landau level fan diagram in the presence of a perpendicular magnetic field indicates various topological phases occurring at higher Chern numbers.

arXiv comment11 pages, 5 figures

References in corpus (36)

• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Experimental realisation of the topological Haldane model
• Floquet Topological Insulator in Semiconductor Quantum Wells
• Crossover of Three-Dimensional Topological Insulator of Bi2Se3 to the Two-Dimensional Limit
• Chern Numbers in Discretized Brillouin Zone: Efficient Method of Computing (Spin) Hall Conductances
• Universal High-Frequency Behavior of Periodically Driven Systems: from Dynamical Stabilization to Floquet Engineering
• Observation of Floquet-Bloch states on the surface of a topological insulator
• Topological characterization of periodically-driven quantum systems
• Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
• Quantum Spin Hall Effect and Topologically Invariant Chern Numbers
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• Massive Dirac fermions and spin physics in an ultrathin film of topological insulator
• Oscillatory crossover from two dimensional to three dimensional topological insulators
• Photo-Induced Topological Phase Transition and a Single Dirac-Cone State in Silicene
• Floquet topological insulators
• Floquet-Bloch theory and topology in periodically driven lattices
• Effective continuous model for surface states and thin films of three dimensional topological insulators
• Floquet Spectrum and Transport Through an Irradiated Graphene Ribbon
• Robustness of the Spin-Chern number
• Floquet chiral edge states in graphene
• Merging of Dirac points and Floquet topological transitions in AC driven graphene
• Quantum Anomalous Hall Effect with Higher Plateaus
• Universal Scaling of Quantum Anomalous Hall Plateau Transition
• Geometrical engineering of a two-bands Chern insulator in two dimensions with arbitrary topological index
• Floquet Edge States with Ultracold Atoms
• Floquet topological phases in a spin-1/2 double kicked rotor
• Electrically Tunable Magnetism in Magnetic Topological Insulators
• Quantum Transport in Magnetic Topological Insulator Thin Films
• Thin topological insulator film in a perpendicular magnetic field
• Edge states and integer quantum Hall effect in topological insulator thin films
• Integer Quantum Hall Effect in a Lattice Model Revisited: Kubo Formalism
• Effect of magnetic field on a magnetic topological insulator film with structural inversion asymmetry
• Floquet bound states around defects and adatoms in graphene
• Quantum Hall Effect in Thin Films of Three-Dimensional Topological Insulators

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• Electric Circuit Simulation of Floquet Topological Insulators
• Phase transitions in intrinsic magnetic topological insulator with high-frequency pumping
• Modulating dichroism and optical conductivity in bilayer graphene under intense electromagnetic field irradiation
• Light-induced switch based on edge modes in irradiated thin topological insulators
• Floquet-Engineered Chern Insulator in two-dimensional $d_{x^2-y^2}$-Wave Altermagnets
• Emergent Weyl-like points in periodically modulated systems