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Title: Investigation of dominant spin wave modes by domain walls collision
Authors: Goolaup, S.
Ramu, M.
Purnama, I.
Chandra Sekhar, M.
Lew, W. S.
Keywords: DRNTU::Science::Physics::Atomic physics::Relativity physics
Issue Date: 2014
Source: Ramu, M., Purnama, I., Goolaup, S., Chandra Sekhar, M., & Lew, W. S. (2014). Investigation of dominant spin wave modes by domain walls collision. Journal of Applied Physics, 115(24), 243908-.
Series/Report no.: Journal of applied physics
Abstract: Spin wave emission due to field-driven domain wall (DW) collision has been investigated numerically and analytically in permalloy nanowires. The spin wave modes generated are diagonally symmetric with respect to the collision point. The non-propagating mode has the highest amplitude along the middle of the width. The frequency of this mode is strongly correlated to the nanowire geometrical dimensions and is independent of the strength of applied field within the range of 0.1 mT to 1 mT. For nanowire with film thickness below 5 nm, a second spin wave harmonic mode is observed. The decay coefficient of the spin wave power suggests that the DWs in a memory device should be at least 300 nm apart for them to be free of interference from the spin waves.
ISSN: 0021-8979
DOI: 10.1063/1.4885453
Rights: © 2014 AIP Publishing LLC. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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