Anomalous Behavior of Resonant Reflection near ν = 1 as an Indicator of Nontrivial Spin Polarization in a Two-Dimensional Electron System

Key Points

• This research investigates the behavior of electron reflections to understand spin polarization in a quantum well.
• Studied a two-dimensional electron system in a GaAs/AlGaAs quantum well.
• Conducted resonant light reflection experiments.
• Analyzed reflection spectra at various magnetic field strengths corresponding to filling factors from 0.2 to 1.4.
• Observed nonmonotonic behavior in transition intensities between spin sublevels.
• Noted unique reflection characteristics indicated filling factor proximity to ν = 1.

Abstract