High Chern number phase in topological insulator multilayer structures: a Dirac cone model study

Abstract

We use the Dirac cone model to explore the high Chern number (C) phases that are realized in the magnetic-doped topological insulator (TI) multilayer structures by Zhao et al. [Nature 588, 419 (2020)]. The Chern number is calculated by capturing the evolution of the phase boundaries with the parameters and then the Chern number phase diagrams of the TI multilayer structures are obtained. The high-C behavior is attributed to the band inversion of the renormalized Dirac cones, along with which the spin polarization at the Γpoint will get increased. Moreover, another two TI multilayer structures as well as the TI superlattice structures are also studied.

8 pages, 8 figures

References in corpus (9)

• Topological Field Theory of Time-Reversal Invariant Insulators
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
• Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• Finite size effects of helical edge states in HgTe/CdTe quantum wells
• Tailoring tricolor structure of magnetic topological insulator for robust axion insulator
• High-Chern number phase in the topological insulator multilayer structures
• Repulsive Fermi gases in a two-dimensional lattice with non-Abelian gauge fields