Light-induced magnetization precession in GaMnAs

Memory effects in photoinduced femtosecond magnetization rotation in ferromagnetic GaMnAs

in ferromagnetic GaMnAs J. Wang, I. Cotoros, D. S. Chemla, X. Liu, J. K. Furdyna, J. Chovan, and I. E. Perakis Department of Physics and Astronomy and Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA Department of Physics and Materials Sciences Division, E.O. Lawrence Berkeley National Laboratory, University of California at Berkeley, Berkeley, California 94720, USA Departmen...

Coherent precession of magnetization in superfluid

The coherent precession in bulk He A-phase is unstable due to the positive feedback of spin supercurrent to the gradient of phase of precession. It was predicted that the homogeneous precession will be stable if the orbital momentum could be oriented along the magnetic field. [7] We have found that the orbital part of order parameter in He A-phase immersed in aerogel orients along the direction...

Laser-induced manipulation of magnetic anisotropy and magnetization precession in an ultrathin cobalt wedge

Light–induced magnetization reversal of high-anisotropy TbCo alloy films

Torsion-induced spin precession

We investigate the motion of a spinning test particle in a spatially-flat FRW-type space-time in the framework of the Einstein-Cartan theory. The space-time has a torsion arising from a spinning fluid filling the space-time. We show that for spinning particles with nonzero transverse spin components, the torsion induces a precession of particle spin around the direction of the fluid spin. We al...