Surprising Spin Behavior at Room Temperature: Circularly Polarized Room-Temperature Electroluminescence from Spin-Polarized Light-Emitting Diodes

摘要

Scientists at Tokyo Institute of Technology have observed almost purely circularly polarized electroluminescence from GaAs-based spin-polarized light-emitting diodes at room temperature, with no external magnetic field. This behavior indicates the presence of spin-dependent nonlinear processes, which may allow the development of semiconductor- based spin-photonic devices in the future.