Observation of cyclotron antiresonance in the topological insulator Bi2Te3

Abstract

We report on the experimental observation of a cyclotron antiresonance in a canonical 3D topological insulator Bi${}_2$Te${}_3$. Magneto-reflectance response of single crystal Bi${}_2$Te${}_3$ was studied in 18 Tesla magnetic field, and compared to other topological insulators studied before, the main spectral feature is inverted. We refer to it as an antiresonance. In order to describe this unconventional behavior we propose the idea of an imaginary cyclotron resonance frequency, which on the other hand indicates that the form of the Lorentz force that magnetic field exerts on charge carriers takes an unconventional form.

References in corpus (9)

• Giant Faraday rotation in single- and multilayer graphene
• Optical characterization of Bi${}_2$Se${}_3$ in a magnetic field: infrared evidence for magnetoelectric coupling in a topological insulator material
• High-Resolution Faraday Rotation and Electron-Phonon Coupling in Surface States of the Bulk-Insulating Topological Insulator Cu${}_{0.02}$Bi${}_2$Se${}_3$
• Hydrodynamic theory of quantum fluctuating superconductivity
• Faraday rotation due to surface states in the topological insulator (Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_3$
• Magneto-Infrared Spectroscopic Study of Ultrathin Bi${}_2$Te${}_3$ Single Crystals
• Suppressed magnetic circular dichroism and valley-selective magneto-absorption due to the effective mass anisotropy in bismuth
• Fano q-reversal in topological insulator Bi2Se3
• Magnetoplasmon resonances in polycrystalline bismuth as seen via terahertz spectroscopy

Cited by in corpus (1)

• Bulk cyclotron resonance in the topological insulator Bi2Te3