Optical control of magnetization of micron-size domains in antiferromagnetic NiO single crystals
arXiv:1011.0327 · doi:10.1103/PhysRevLett.106.047401
Abstract
We propose Raman-induced collinear difference-frequency generation (DFG) as a method to manipulate dynamical magnetization. When a fundamental beam propagates along a threefold rotational axis, this coherent second-order optical process is permitted by angular momentum conservation through the rotational analogue of the Umklapp process. As a demonstration, we experimentally obtained polarization properties of collinear magnetic DFG along a [111] axis of a single crystal of antiferromagnetic NiO with micro multidomain structure, which excellently agreed with the theoretical prediction.
11 pages, 3 figures, submitted to Physical Review Letters