spinpumping
Spin pumping is a phenomenon in condensed matter physics where a time-varying magnetization in one material generates a flow of angular momentum, or spin current, into an adjacent material. This typically occurs when a ferromagnetic material is excited to precess its magnetization, for example, by applying an alternating magnetic field or through microwave excitation. The precessing magnetization acts like a collective motion of spins, and this motion can impart angular momentum to the spins in a nearby non-magnetic material, often a metal.
The generated spin current is a flow of spins rather than a flow of charge. This means
Spin pumping is a key mechanism for generating and detecting spin currents. It has important implications for