The photoresponse of a two-dimensional electron gas at the second harmonic of the cyclotron resonance

Abstract

Terahertz spectroscopy experiments at magnetic fields and low temperatures were carried out on samples of different gate shapes processed on a high electron mobility GaAs/AlGaAs heterostructure. For a given radiation frequency, multiple magnetoplasmon resonances were observed with a dispersion relation described within a local approximation of the magnetoconductivity tensor. The second harmonic of the cyclotron resonance was observed and its appearance was interpreted as resulting from a high frequency, inhomogeneous electromagnetic field on the border of a two-dimensional electron gas with a metallic gate and/or an ohmic contact.

5 pages, 3 figures

References in corpus (2)

• Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance
• Plasmonic terahertz detectors based on a high-electron mobility GaAs/AlGaAs heterostructure

Cited by in corpus (10)

• Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene
• Hall effect in Poiseuille flow of two-dimensional electron fluid
• Micromagnets dramatically enhance effects of viscous hydrodynamic flow in two-dimensional electron fluid
• Driving Viscous Hydrodynamics in Bulk Electron Flow in Graphene Using Micromagnets
• Highly correlated two-dimensional viscous electron fluid in moderate magnetic fields
• Spin imaging of Poiseuille flow of viscous electronic fluid
• Ballistic flow of two-dimensional electrons in a magnetic field
• Low-energy excitations in multiple modulation-doped CdTe/(CdMg)Te quantum wells
• Tunable viscous layers in Corbino geometry using density junctions
• Ballistic-hydrodynamic phase transition in flow of two-dimensional electrons