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|Title:||Spin waves in permalloy nanowires: The importance of easy-plane anisotropy||Authors:||Nguyen, T.M.
|Issue Date:||2006||Citation:||Nguyen, T.M., Cottam, M.G., Liu, H.Y., Wang, Z.K., Ng, S.C., Kuok, M.H., Lockwood, D.J., Nielsch, K., Gösele, U. (2006). Spin waves in permalloy nanowires: The importance of easy-plane anisotropy. Physical Review B - Condensed Matter and Materials Physics 73 (14) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.73.140402||Abstract:||Brillouin light scattering has been employed to study the magnetic-field dependence of the discrete spin waves in permalloy Ni80 Fe20 nanowires. When a small magnetic field is applied transverse to the nanowire, the results reveal a low-frequency mode, which is absent in the longitudinal case. A Hamiltonian-based microscopic theory for nanowires with inhomogeneous magnetization shows that the appearance of this mode, along with its higher-field behavior, is a significant consequence of a small easy-plane single-ion anisotropy at the nanowire surface. The calculations provide a good description of experimental data for both the transverse and longitudinal cases. © 2006 The American Physical Society.||Source Title:||Physical Review B - Condensed Matter and Materials Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/97993||ISSN:||10980121||DOI:||10.1103/PhysRevB.73.140402|
|Appears in Collections:||Staff Publications|
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