@article{f706a097a6d044ec8efa952fa840e161,
title = "Deviation from exponential decay for spin waves excited with a coplanar waveguide antenna",
abstract = "We have investigated the propagation of surface spin waves in a Permalloy thin film excited by an asymmetric coplanar antenna. A surprising oscillatory behavior superimposed on the exponential decay is observed in the spin wave intensity mapped with the micro-Brillouin light scattering technique. The oscillations can be modeled as the interference between a propagating spin wave and a background magnetization with spatially uniform phase. We use a simple closed-form equation that includes both contributions to fit our experimental results. From the fit results, we extract the spin wave propagation length and the spin wave vector in a frequency range limited by the antenna bandwidth.",
author = "Birt, {Daniel R.} and Kyongmo An and Maxim Tsoi and Shingo Tamaru and David Ricketts and Wong, {Kin L.} and {Khalili Amiri}, Pedram and Wang, {Kang L.} and Xiaoqin Li",
note = "Funding Information: We gratefully acknowledge financial support from the following sources: AFOSR FA9550-08-1-0463, AFOSR FA-9550-08-1-0058, and the Alfred P. Sloan Foundation. D.B. acknowledges a fellowship from the NSF-IGERT program via Grant No. DGE-0549417. M.T. is supported in part by NSF Grant DMR 1207577. The work at UCLA was supported by the DARPA program on Non-Volatile Logic, and by the Nanoelectronics Research Initiative (NRI) through the Western Institute of Nanoelectronics (WIN).",
year = "2012",
month = dec,
day = "17",
doi = "10.1063/1.4772798",
language = "English",
volume = "101",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "25",
}