Ultrafast Quenching of Ferromagnetism in InMnAs Induced by Intense Laser Irradiation

J. Wang, C. Sun, J. Kono +4

Time-resolved magneto-optical Kerr spectroscopy of ferromagnetic InMnAs reveals two distinct {\em demagnetization} processes -- fast ($<1$ ps) and slow ($\sim$100 ps). Both compone…