Influence of carriers on magnetization relaxation in (Cd,Mn)Te quantum wells

The relaxation of the magnetization after a short pulse of magnetic field in n-doped and p-doped (Cd,Mn)Te quantum wells is determined from the giant Zeeman shift of the photoluminescence and transmission lines. This technique allows us to investigate the magnetization dynamics in zero field. In n-doped samples the magnetization relaxation is found to be faster than 20 ns. In case of p-doped samples two components of relaxation are observed. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)