From ultrafast spin currents to spintronics THz emitters and subpicosecond giant spin injection in semiconductors

摘要

In 2010 I proposed the existence of out-of-equilibrium spin current pulses [1-3] and that they could explain the origin of the ultrafast demagnetisation. [4] A number of experi-mental works have confirmed such picture [5-8] and real-ised predictions such as the transfer of magnetisation in the non-magnetic substrate and the ultrafast increase of mag-netisation.