Dispersive lineshape of the resistively-detected NMR in the vicinity of Landau level filling V = 1

摘要

We report resistively-detected nuclear magnetic resonance studies on GaAs/AlGaAs two-dimensional electron systems in the quantum Hall regime. A peculiar dispersive lineshape that occurs in the vicinity of Landau level filling V = 1 is found to evolve into a simple dip structure with increasing |V - 1|. The nuclear spin-lattice relaxation rate exhibits distinct temperature dependences in the respective regions.