Quantized Dispersion of Two-Dimensional Magnetoplasmons Detected by Photoconductivity Spectroscopy

Abstract

We find that the long-wavelength magnetoplasmon, resistively detected by photoconductivity spectroscopy in high-mobility two-dimensional electron systems, deviates from its well-known semiclassical nature as uncovered in conventional absorption experiments. A clear filling-factor dependent plateau-type dispersion is observed that reveals a so far unknown relation between the magnetoplasmon and the quantum Hall effect.

5 pages, 3 figures

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• Bernstein modes and giant microwave response of two-dimensional electron system
• Reservoir model for two-dimensional electron gases in quantizing magnetic fields: a review
• Terahertz detection of magnetic field-driven topological phase transition in HgTe-based transistors
• Coherent interaction of a-few-electron quantum dot with a terahertz optical resonator
• Resistively detected high-order magnetoplasmons in a high-quality 2D electron gas
• Fermi Liquid Model of Radiation Induced Magnetoresistance Oscillations in GaAs/Al${}_x$Ga${}_{1-x}$As Heterostructure Two-Dimensional Electron System: Theoretical Evidence of an Electron Reservoir
• Magnetic induction dependence of the dispersion of magnetoplasmon in a two-dimensional electron gas with finite layer thickness
• Strongly nonlinear Bernstein modes in graphene reveal plasmon-enhanced near-field magnetoabsorption
• Edge induced magneto plasmon excitation in a two-dimensional electron gas under quantum Hall conditions
• Ballistic-to-hydrodynamic transition and collective modes for two-dimensional electron systems in magnetic field
• Equatorial magnetoplasma waves