Phase transitions in intrinsic magnetic topological insulator with high-frequency pumping

Abstract

In this work, we investigate the topological phase transitions in an effective model for a topological thin film with high-frequency pumping. In particular, our results show that the circularly polarized light can break the time-reversal symmetry and induce the quantum anomalous Hall insulator (QAHI) phase. Meanwhile, the bulk magnetic moment can also break the time-reversal symmetry. Therefore, it shows rich phase diagram by tunning the intensity of the light and the thickness of the thin film. Using the parameters fitted by experimental data, we give the topological phase diagram of the Cr-doped Bi${}_2$Se${}_3$ thin film, showing that by modulating the strength of the polarized optical field in an experimentally accessible range, there are four different phases: the normal insulator phase, the time-reversal-symmetry-broken quantum spin Hall insulator phase, and two different QAHI phases with opposite Chern numbers. Comparing with the non-doped Bi${}_2$Se${}_3$, it is found that the interplay between the light and bulk magnetic moment separates the two different QAHI phases with opposite Chern numbers. The results show that an intrinsic magnetic topological insulator with high-frequency pumping is an ideal platform for further exploring various topological phenomena with a spontaneously broken time-reversal symmetry.

15 pages, 5 figures

References in corpus (32)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Photovoltaic Hall effect in graphene
• Topological characterization of periodically-driven quantum systems
• Nonlocal edge state transport in the quantum spin Hall state
• Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
• Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells
• Quantum Anomalous Hall Effect in Graphene from Rashba and Exchange Effects
• 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
• Intrinsic vs. extrinsic anomalous Hall effect in ferromagnets
• The development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3
• Surface quantized anomalous Hall current and magneto-electric effect in magnetically disordered topological insulators
• Robustness of the Spin-Chern number
• Photoinduced transition between conventional and topological insulators in two-dimensional electronic systems
• Modulated Floquet Topological Insulators
• Time independent description of rapidly oscillating potentials
• Scaling of the Quantum Anomalous Hall Effect as an Indicator of Axion Electrodynamics
• Observation of the quantum-anomalous-Hall insulator to Anderson insulator quantum phase transition and its scaling behavior
• Floquet interface states in illuminated three-dimensional topological insulators
• Floquet dynamics in two-dimensional semi-Dirac semimetals and three-dimensional Dirac semimetals
• Field-Tunable One-Sided Higher-Order Topological Hinge States in Dirac Semimetals
• Weyl nodes with higher-order topology in an optically driven nodal-line semimetal
• Disorder-induced topological phase transitions on Lieb lattices
• Light-induced quantum anomalous Hall effect on the 2D surfaces of 3D topological insulators
• Light-induced topological phases in thin films of magnetically doped topological insulators
• Quantum Hall effect originated from helical edge states in Cd${}_3$As${}_2$
• Engineering of topological phases in driven thin topological insulator: Structure inversion asymmetry effect
• Optically induced topological states on the surface of mercury telluride
• Photoinduced Quantum Anomalous Hall States in the Topological Anderson Insulator

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• Light-induced phase crossovers in a quantum spin Hall system
• Nonlinear Hall effects with an exceptional ring
• Five-dimensional Floquet topological semimetals with emergent Yang monopoles and linked Weyl surfaces
• Tunable corner states in topological insulators with long-range hoppings and diverse shapes
• Emergent Weyl-like points in periodically modulated systems