@article{6de0840f9dfa4c7888a04db84804e2cb,
title = "Angular-dependent spin dynamics of a triad of permalloy macrospins",
abstract = "We experimentally and theoretically characterize the angular-dependent microwave response of three-macrospin-vertex structures that can serve as a node in various spin ice lattices. The macrospins consist of patterned permalloy thin films with an elliptical cross section together with an in-plane aspect ratio allowing an Ising-like behavior together with bulk modes as low-frequency excitations in the field range of interest. Various branches of the frequency-magnetic field curves display atypical behaviors and discontinuities, together with softening due to macrospin reversals. The overall behavior observed accurately corresponds to a superposition of the spectra of the individual macrospins. The measured ferromagnetic resonance spectra are in good agreement with theoretical modeling. In particular, they reveal a close correlation between the field direction (relative to the individual macrospins), and the corresponding frequency-magnetic field curve, i.e., between the geometry and the magnetic response.",
author = "Wonbae Bang and F. Montoncello and Jungfleisch, {M. B.} and A. Hoffmann and L. Giovannini and Ketterson, {J. B.}",
note = "Funding Information: Work at Northwestern was supported under the National Science Foundation (NSF) Grant No. DMR 1507058. Device fabrication was carried out at Argonne and supported by the US Department of Energy, Office of Science, Materials Science and Engineering Division. Lithography was carried out at the Center for Nanoscale Materials, an Office of Science user facility, which is supported by the Department of Energy (DOE), Office of Science, Basic Energy Science under Contract No. DE-AC02-06CH11357. Funding Information: Work at Northwestern was supported under the National Science Foundation (NSF) Grant No. DMR 1507058. Device fabrication was carried out at Argonne and supported by the US Department of Energy, Office of Science, Materials Science and Engineering Division. Lithography was carried out at the Center for Nanoscale Materials, an Office of Science user facility, which is supported by the Department of Energy (DOE), Office of Science, Basic Energy Science under Contract No. DE-AC02-06CH11357. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",
year = "2019",
month = jan,
day = "14",
doi = "10.1103/PhysRevB.99.014415",
language = "English (US)",
volume = "99",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics",
number = "1",
}