Resonant manifestations of chiral excitons in Faraday and Kerr effects in a topological insulator film

@article{Efimkin2013ResonantMO,
  title={Resonant manifestations of chiral excitons in Faraday and Kerr effects in a topological insulator film},
  author={Dmitry K. Efimkin and Yurii E. Lozovik},
  journal={Physical Review B},
  year={2013},
  volume={87},
  pages={245416}
}
Manifestation of chiral excitons on surfaces of topological insulator thin film with magnetically induced energy gap in the surface spectrum in magnetooptical Kerr and Faraday effects is analyzes. Excitonic contribution to a surface optical conductivity tensor is calculated. Chiral excitons contrary to conventional ones resonantly contribute to Hall conductivity due to lack of the symmetry between the states with opposite angular momentum. They can lead to considerable enhancement of Faraday… 
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References

SHOWING 1-10 OF 39 REFERENCES
Giant magneto-optical Kerr effect and universal Faraday effect in thin-film topological insulators.
TLDR
The magneto-optical Kerr and Faraday effects of a topological insulator thin film weakly exchange coupled to a ferromagnet are considered and it is found that its Faraday rotation has a universal value at low frequencies.
Anomalous galvanomagnetism, cyclotron resonance, and microwave spectroscopy of topological insulators
The surface quantum Hall state, magneto-electric phenomena and their connection to axion electrodynamics have been studied intensively for topological insulators. One of the obstacles for observing…
Terahertz response and colossal Kerr rotation from the surface states of the topological insulator Bi2Se3.
TLDR
The THz response of thin films of the topological insulator Bi2Se3 exhibit robust properties including narrow, almost thickness-independent Drude peaks, and an unprecedentedly large polarization rotation of linearly polarized light reflected in an applied magnetic field.
Topological surface states protected from backscattering by chiral spin texture
TLDR
It is demonstrated that the chiral nature of these states protects the spin of the carriers, potentially useful for spin-based electronics, in which long spin coherence is critical, and also for quantum computing applications, where topological protection can enable fault-tolerant information processing.
Generalized quantization condition for topological insulators
The topological magnetoelectric effect (TME) is the fundamental quantization effect for topological insulators in units of the fine structure constant $\alpha$. In [Phys. Rev. Lett. 105,…
Influence of excited Landau levels on a two-dimensional electron¿hole system in a strong perpendicular magnetic field
Excitons and plasmons in metals, semiconductors and insulators: A unified approach
Magneto-optical and magnetoelectric effects of topological insulators in quantizing magnetic fields
We develop a theory of the magneto-optical and magneto-electric properties of a topological insulator thin film in the presence of a quantizing external magnetic field. We find that low-frequency…
Ultrafast optical excitation of a persistent surface-state population in the topological insulator Bi2Se3.
TLDR
Using femtosecond time- and angle-resolved photoemission spectroscopy, the nonequilibrium dynamics of the topological insulator Bi2Se3 is investigated, finding an unusually long-lived population of a metallic Dirac surface state with spin texture that may present a channel in which to drive transient spin-polarized currents.
Topological insulators and superconductors
Topological insulators are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors. They are characterized by a full insulating gap in the…
...
...