Linear and nonlinear spin waves in non-uniform potentials

Basic data for this project

Type of project: Individual project
Duration: 16/05/2007 - 28/02/2012 | 1st Funding period

Description

The main goal of this project is to study propagation and nonlinear dynamics of spin waves and spin-wave packets in non-uniform potentials such as single and double potential barriers and wells, periodic potentials, and systems of coupled potential wells. Such phenomena as tunneling, tunneling-associated instabilities similar to Josephson effect, dispersion management, gap and discrete solitons, nonlinear self-trapping and phase locking will be investi-gated. As a nonlinear medium for these studies thin dielectric magnetic films placed into a static magnetic field will be used. The non-uniform potentials will be created by locally modifying the static field. The experiments will be carried out using microwave spectroscopy as well as time- and space-resolved Brillouin light scattering spectroscopy allowing for visualization of propagation and dynamics of spin waves in two spatial dimensions. The studies within the frames of the project will contribute to the physics of magnetic phenomena in solids and to the nonlinear wave physics. Besides, an observation of novel nonlinear phenomena is likely, which could bring new ideas to the quickly developing field of nonlinear dynamics of Bose-Einstein condensates

Keywords: nonlinear dynamics; spin waves; nonlinear wave physics; Bose-Einstein condensates