Slowly generated anomalously large nuclear field in bulk n-AlGaAs

This study investigated the dynamics of an electron--nuclear spin-coupled system using three Al_xGa_{1-x}As bulk samples with different aluminum concentrations x of 0, 0.05, and 0.15. The time-resolved Kerr rotation technique was primarily used. The samples with x= 0.05 and 0.15 exhibited an anomalously large nuclear magnetic field of \sim1.1 T,... Show more