Observation of spin-wave propagation in permalloy microstripes

Autor:	Krohn, Andreas, Mansfeld, Sebastian, Podbielski, Jan, Topp, Jesco, Hansen, Wolfgang, Heitmann, Detlef, Mendach, Stefan
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
Popis:	We report on the propagation of spin waves in permalloy microstripes. By means of scanning Kerr microscopy combined with continuous microwave excitation, we detect the time evolution of spin-wave interference patterns in an external magnetic field. Assuming transverse spin-wave quantization we can directly measure the amplitude, phase velocity and damping for the corresponding transversal wave mode numbers m. We find that the spin-wave interference pattern is dominated by m=0 and m=2 with phase velocities v_0=71 km/s and v_2=47 km/s, respectively. Comment: 3 pages, 3 figures, submitted to Applied Physics Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0905.2172 Zobrazit plný text záznamu View this record from Arxiv