| Literature DB >> 20866995 |
T Schneider1, A A Serga, A V Chumak, C W Sandweg, S Trudel, S Wolff, M P Kostylev, V S Tiberkevich, A N Slavin, B Hillebrands.
Abstract
We predict and experimentally demonstrate that in a medium with externally induced anisotropy, a wave source of a sufficiently small size can excite practically nondiffractive wave beams with stable subwavelength transverse aperture. The direction of beam propagation is controlled by rotating the induced anisotropy axis. Nondiffractive wave beam propagation, reflection, and scattering, as well as beam steering have been directly observed by optically probing dipolar spin waves in yttrium iron garnet films, where the uniaxial anisotropy was created by an in-plane bias magnetic field.Year: 2010 PMID： 20866995 DOI： 10.1103/PhysRevLett.104.197203
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161