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Electrical spin-wave spectroscopy in nanoscale waveguides with nonuniform magnetization

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 12 Apr 2021Embargo end date: 01 Jan 2021 Belgium, Italy English Publisher:AIP PublishingJournal:Applied Physics Letters, volume 118 (issn: 0003-6951, eissn: 1077-3118,

Authors: Inge Asselberghs; Daniele Narducci; Daniele Narducci; Marc Heyns; Frederic Vanderveken; Christoph Adelmann; Iuliana Radu; +3 Authors

doi: 10.1063/5.0045806 , 10.48550/arxiv.2101.11983

arXiv: http://arxiv.org/abs/2101.11983

handle: 11573/1556251

Electrical spin-wave spectroscopy in nanoscale waveguides with nonuniform magnetization

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Abstract

Spin wave modes in magnetic waveguides with the width down to 320 nm have been studied by electrical propagating spin-wave spectroscopy and micromagnetic simulations for both longitudinal and transverse magnetic bias fields. For longitudinal bias fields, a 1.3 GHz wide spin-wave band was observed in agreement with analytical dispersion relations for uniform magnetization. However, the transverse bias field led to several distinct bands, corresponding to different quantized width modes, with both negative and positive slopes. Micromagnetic simulations showed that, in this geometry, the magnetization was nonuniform and tilted due to the strong shape anisotropy of the waveguides. Simulations of the quantized spin-wave modes in such nonuniformly magnetized waveguides resulted in spin wave dispersion relations in good agreement with the experiments.

Countries

Belgium, Italy

Related Organizations

Keywords

Science & Technology, 02 Physical Sciences, Condensed Matter - Mesoscale and Nanoscale Physics, Physics, FOS: Physical sciences, Spin wave, Physics - Applied Physics, Applied Physics (physics.app-ph), spin-wave; magnetization; nanoelectronics; CMOS compatible, ferromagnetism, 09 Engineering, Physics, Applied, 10 Technology, Physical Sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), 51 Physical sciences, Applied Physics, 40 Engineering

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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%