Spin Precession In A Model Structure For Spintronics

Transverse electron and hole spin relaxation times were measured in both parts of a generic spintronic structure device consisting of two thin layers: diluted magnetic Cd0.96Mn0.04Te (spin aligner) and a layer non‐magnetic CdTe (spin accumulator). By using time‐resolved magnetoptical Kerr rotation as a fast time‐resolved magnetization probe, we find that the carriers in Cd0.96Mn0.04Te lose their initial spin coherence within ∼1 ps. The undoped spin accumulator is characterized by relatively long electron spin relaxation time that of the order of several hundreds ps.