Confined magnetoelastic waves in thin waveguides

Frederic Vanderveken, Jeroen Mulkers, Jonathan Leliaert, Bartel Van Waeyenberge, Bart Sorée, Odysseas Zografos, Florin Ciubotaru, and Christoph Adelmann

Phys. Rev. B 103, 054439 – Published 26 February 2021

Abstract

The characteristics of confined magnetoelastic waves in nanoscale ferromagnetic magnetostrictive waveguides have been investigated by a combination of analytical and numerical calculations. The presence of both magnetostriction and inverse magnetostriction leads to the coupling between confined spin waves and elastic Lamb waves. Numerical simulations of the coupled system have been used to extract the dispersion relations of the magnetoelastic waves as well as their mode profiles.

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Received 27 November 2020
Revised 19 January 2021
Accepted 11 February 2021

DOI:https://doi.org/10.1103/PhysRevB.103.054439

Physics Subject Headings (PhySH)

Dipolar interaction Exchange interaction Ferrimagnetism Ferromagnetism Magnetism Magnetization dynamics Magnetoacoustic effect Magnetoelastic effect Magnetostriction Magnons Mechanical & acoustical properties Micromagnetism Phonons Spin dynamics Spin waves

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Frederic Vanderveken^1,2,*, Jeroen Mulkers ³, Jonathan Leliaert³, Bartel Van Waeyenberge³, Bart Sorée^1,4,5, Odysseas Zografos ¹, Florin Ciubotaru ¹, and Christoph Adelmann ^1,†

¹Imec, 3001 Leuven, Belgium
²KU Leuven, Departement Materiaalkunde, SIEM, 3001 Leuven, Belgium
³Universiteit Gent, Departement Vastestofwetenschappen, DyNaMat, 9000 Gent, Belgium
⁴KU Leuven, Departement Elektrotechniek, TELEMIC, 3001 Leuven, Belgium
⁵Universiteit Antwerpen, Departement Fysica, 2000 Antwerpen, Belgium

^*frederic.vanderveken@imec.be
^†christoph.adelmann@imec.be

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Issue

Vol. 103, Iss. 5 — 1 February 2021

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