Title :
Selective Behavior of Spin Wave Propagation in Asymmetrically Modulated Ferromagnetic Nanowires
Author :
Piao, H.-G. ; Shim, J.-H. ; Yang, M. ; Pan, L. ; Kim, D.-H.
Author_Institution :
Coll. of Sci., China Three Gorges Univ., Yichang, China
Abstract :
We have investigated a selective behavior of spin wave (SW) propagation under an alternate magnetic (AM)-driving field in an asymmetrically sawtooth-shaped notched ferromagnetic nanowire by means of micromagnetic simulation. By variations of the amplitude and the frequency of the AM field, a filter-like selective behavior and a diode-like asymmetrical propagation behavior of certain SW modes are observed during a magnetic domain wall propagation in the nanowire. The preferential direction of an SW propagation and the filtering behavior of SW modes are achievable by the geometrically modulation of the asymmetrically sawtooth-shaped notched ferromagnetic nanowire.
Keywords :
ferromagnetism; magnetic domain walls; micromagnetics; nanomagnetics; nanowires; spin waves; alternate magnetic-driving field; asymmetrically modulated ferromagnetic nanowires; asymmetrically sawtooth-shaped notched ferromagnetic nanowires; diode-like asymmetrical propagation behavior; filter-like selective behavior; filtering behavior; geometrically modulation; magnetic domain wall propagation; micromagnetic simulation; spin wave propagation; Magnetic domain walls; Magnetic domains; Magnetization; Micromagnetics; Nanowires; Propagation; Real-time systems; Ferromagnetic nanowire; Spin wave propagation; ferromagnetic nanowire; magnetic domain wall; magnetic domain wall (DW); magnetization dynamics; spin wave (SW) propagation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2440474
