Electric field control of magnetization dynamics in ZnMnSe/ZnBeSe   diluted-magnetic-semiconductor heterostructures
  We show that the magnetization dynamics in diluted magnetic semiconductors can be controlled separately from the static magnetization by means of an electric field. The spin-lattice relaxation (SLR) time of magnetic Mn2+ ions was tuned by two orders of magnitude by a gate voltage applied to n-type modulation-doped (Zn,Mn)Se/(Zn,Be)Se quantum wells. The effect is based on providing an additional channel for SLR by a two-dimensional electron gas (2DEG). The static magnetization responsible for the giant Zeeman spin splitting of excitons was not influenced by the 2DEG density. 
M. K. Kneip, D. R. Yakovlev, M. Bayer, T. Slobodskyy, G. Schmidt, and   L. W. Molenkamp