Nonlinear Magneto-Optical and Magnetoelectric Phenomena in Topological Insulator Heterostructures

Abstract

Three-dimensional topological insulator films in contact with magnetic layers exhibit intriguing magneto-optical and magnetoelectric phenomena, but little is known beyond the linear response regime. We demonstrate that the presence of two electric fields parallel to the surface of the film induces a perpendicular AC polarization, whereas a static polarization can be induced by applying a single circularly polarized electromagnetic wave. These phenomena are determined by the second-order susceptibility, which also controls the manner in which the anomalous Hall current is modulated by a perpendicular AC electric field. If the modulation frequency is low, the Hall effect is topologically protected and the nonlinear response vanishes.

5 pages

References in corpus (5)

• Topological Field Theory of Time-Reversal Invariant Insulators
• Gate-Voltage Control of Chemical Potential and Weak Anti-localization in Bismuth Selenide
• Electric-Magnetic Duality and Topological Insulators
• Topological insulator in a Bi-Bi${}_2$Se${}_3$ infinitely adaptive superlattice phase
• Calculation of divergent photon absorption in ultrathin films of a topological insulator

Cited by in corpus (8)

• Dynamical axion state with hidden pseudospin Chern numbers in MnBi${}_2$Te${}_4$-based heterostructures
• Tunable dynamical magnetoelectric effect in antiferromagnetic topological insulator MnBi${}_2$Te${}_4$ films
• Quantum Hall Edge States in Topological Insulator Nanoribbons
• Orbital Edelstein effect from density-wave order
• Axionic surface wave in dynamical axion insulators
• Axion instability and non-linear electromagnetic effect
• Topological Magnetoelectric Effect: Nonlinear Time-Reversal-Symmetric Response, Witten Effect, and Half-Integer Quantum Hall Effect
• Topological magnetic dipolar interaction and non-local electric magnetization control in topological insulator heterostructures