By a News Reporter-Staff News Editor at Science Letter -- A new study on Science is now available. According to news reporting out of Garching, Germany, by NewsRx editors, research stated, "Magnonics as an emerging nanotechnology offers functionalities beyond current semiconductor technology. Spin waves used in cellular nonlinear networks are expected to speed up technologically, demanding tasks such as image processing and speech recognition at low power consumption."
Our news journalists obtained a quote from the research from Technical University, "However, efficient coupling to microelectronics poses a vital challenge. Previously developed techniques for spin-wave excitation (for example, by using parametric pumping in a cavity) may not allow for the relevant downscaling or provide only individual point-like sources. Here we demonstrate that a grating coupler of periodically nanostructured magnets provokes multidirectional emission of short-wavelength spin waves with giantly enhanced amplitude compared with a bare microwave antenna. Exploring the dependence on ferromagnetic materials, lattice constants and the applied magnetic field, we find the magnonic grating coupler to be more versatile compared with gratings in photonics and plasmonics."
According to the news editors, the research concluded: "Our results allow one to convert, in particular, straight microwave antennas into omnidirectional emitters for short-wavelength spin waves, which are key to cellular nonlinear networks and integrated magnonics."
For more information on this research see: Omnidirectional spin-wave nanograting coupler. Nature Communications, 2013;4():1-9. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Nature Communications - www.nature.com/ncomms/)
Our news journalists report that additional information may be obtained by contacting H.M. Yu, Technical University of Munich, Phys Dept. of E10, D-85747 Garching, Germany. Additional authors for this research include G. Duerr, R. Huber, M. Bahr, T. Schwarze, F. Brandl and D. Grundler (see also Science).
Keywords for this news article include: Europe, Germany, Science, Garching
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC