Néel domain wall as a tunable filter for optically excited magnetostatic waves
[Display omitted] •A concept of a tunable optical excitation of spin waves in a ferromagnetic film with Néel domain wall is presented.•The fluence of the femtosecond laser pulse and its position with respect to the domain wall affect the frequencies of the excited spin waves.•The presence of the dom...
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Published in | Journal of magnetism and magnetic materials Vol. 534; p. 168018 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
15.09.2021
Elsevier BV |
Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•A concept of a tunable optical excitation of spin waves in a ferromagnetic film with Néel domain wall is presented.•The fluence of the femtosecond laser pulse and its position with respect to the domain wall affect the frequencies of the excited spin waves.•The presence of the domain wall plays a crucial role in the control of the spin waves’ spectrum.
We present a concept of a tunable optical excitation of spin waves and filtering their spectra in a ferromagnetic film with 180° Néel domain wall. We show by means of micromagnetic simulation that the fluence of the femtosecond laser pulse and its position with respect to the domain wall affect the frequencies of the excited spin waves, and the presence of the domain wall plays crucial role in control of the spin waves’ spectrum. The predicted effects are understood by analyzing the changes of the spin waves’ dispersion under the impact of the laser pulse. |
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ISSN: | 0304-8853 1873-4766 |
DOI: | 10.1016/j.jmmm.2021.168018 |