Photo-induced demagnetization and polaron binding energy increase observed by mid-infrared pump-probe spectroscopy in ferromagnetic Ga${}_{0.94}$Mn${}_{0.06}$As

E. Kojima, J. B. Heroux, R. Shimano +4

Time-resolved transmittance measurements performed on Ga${}_{0.94}$Mn${}_{0.06}$As in the vicinity of the Mn-induced mid-infrared absorption band are presented. Upon photo-excitation,…