B.T. Jonker, H. Abad, et al.
Journal of Crystal Growth
The reflectivity spectra from single-crystal epilayers of the diluted magnetic semiconductor Zn1-x Cox Se(x=0.0076, x=0.0104) have been studied as functions of magnetic field and temperature. The excitonic spin splitting in these crystals saturates for magnetic fields B>5 T, indicating that (Zn,Co)Se is a Brillouin paramagnet, in agreement with magnetization and electron-paramagnetic-resonance studies on the same samples. The magnetoreflectivity data yield a value for the exchange parameter difference N0 (α-β)=2420±40 meV, significantly larger than the values obtained for either Fe- or Mn-based diluted magnetic semiconductors studied to date.
B.T. Jonker, H. Abad, et al.
Journal of Crystal Growth
B.T. Jonker, W.C. Chou, et al.
Journal of Applied Physics
B.T. Jonker, W.C. Chou, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
L.P. Fu, W.Y. Yu, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films