Cyclotron resonance measurements of electron effective mass in strained AlGaAs/InGaAs/GaAs pseudomorphic structures

Abstract
Electron effective mass in the InxGa1−xAs conduction channel of strained AlGaAs/InGaAs/GaAs pseudomorphic structures is measured using far‐infrared cyclotron resonance techniques at 4.2 K. The measured cyclotron mass is heavier than the conduction‐band‐edge mass in bulk InxGa1−xAs. This result is explained by the large two‐dimensional electron density realized in the structure, and the lattice strain that exists in the InxGa1−xAs layer.