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Dynamic control of spin wave spectra using spin-polarized currents

Dynamic control of spin wave spectra using spin-polarized currents
Dynamic control of spin wave spectra using spin-polarized currents
We describe a method of controlling the spin wave spectra dynamically in a uniform nanostripe waveguide through spin-polarized currents. A stable periodic magnetization structure is observed when the current flows vertically through the center of nanostripe waveguide. After being excited, the spin wave is transmitted at the sides of the waveguide. Numerical simulations of spin-wave transmission and dispersion curves reveal a single, pronounced band gap. Moreover, the periodic magnetization structure can be turned on and off by the spin-polarized current. The switching process from full rejection to full transmission takes place within less than 3?ns. Thus, this type magnonic waveguide can be utilized for low-dissipation spin wave based filters
0003-6951
112405
Wang, Qi
ddfc62a2-708c-43b1-8eed-d68d4e87d96a
Zhang, Huaiwu
6ebfd9da-c2a8-464d-bc16-f24884b11d3d
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Bai, Faiming
e0255d74-ac73-40c0-a9cf-086336d96c54
Zhong, Zhiyong
75539880-bac1-4780-b3f3-99f08bc973ba
Wang, Qi
ddfc62a2-708c-43b1-8eed-d68d4e87d96a
Zhang, Huaiwu
6ebfd9da-c2a8-464d-bc16-f24884b11d3d
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Bai, Faiming
e0255d74-ac73-40c0-a9cf-086336d96c54
Zhong, Zhiyong
75539880-bac1-4780-b3f3-99f08bc973ba

Wang, Qi, Zhang, Huaiwu, Fangohr, Hans, Bai, Faiming and Zhong, Zhiyong (2014) Dynamic control of spin wave spectra using spin-polarized currents. Applied Physics Letters, 105 (11), 112405. (doi:10.1063/1.4896027).

Record type: Article

Abstract

We describe a method of controlling the spin wave spectra dynamically in a uniform nanostripe waveguide through spin-polarized currents. A stable periodic magnetization structure is observed when the current flows vertically through the center of nanostripe waveguide. After being excited, the spin wave is transmitted at the sides of the waveguide. Numerical simulations of spin-wave transmission and dispersion curves reveal a single, pronounced band gap. Moreover, the periodic magnetization structure can be turned on and off by the spin-polarized current. The switching process from full rejection to full transmission takes place within less than 3?ns. Thus, this type magnonic waveguide can be utilized for low-dissipation spin wave based filters

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arxiv/papers/1409/1409.2421.pdf - Accepted Manuscript
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Accepted/In Press date: 4 September 2014
Published date: 17 September 2014
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 370301
URI: http://eprints.soton.ac.uk/id/eprint/370301
ISSN: 0003-6951
PURE UUID: 42ea294c-25e4-4d22-98ff-11f0755bf724
ORCID for Hans Fangohr: ORCID iD orcid.org/0000-0001-5494-7193

Catalogue record

Date deposited: 27 Oct 2014 14:18
Last modified: 21 Nov 2019 01:37

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