Control of spin-wave transmission by a programmable domain wall

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Hämäläinen, Sampo J. Madami, Marco Qin, Huajun Gubbiotti, Gianluca van Dijken, Sebastiaan 2018-12-10T10:28:35Z 2018-12-10T10:28:35Z 2018-11-19
dc.identifier.citation Hämäläinen , S J , Madami , M , Qin , H , Gubbiotti , G & van Dijken , S 2018 , ' Control of spin-wave transmission by a programmable domain wall ' Nature Communications , vol. 9 , no. 1 , pp. 1-8 . DOI: 10.1038/s41467-018-07372-x en
dc.identifier.issn 2041-1723
dc.identifier.other PURE UUID: badd206a-85d4-463c-990e-d71363c24334
dc.identifier.other PURE ITEMURL:
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dc.description.abstract Active manipulation of spin waves is essential for the development of magnon-based technologies. Here, we demonstrate programmable spin-wave filtering by resetting the spin structure of pinned 90° Néel domain walls in a continuous CoFeB film with abrupt rotations of uniaxial magnetic anisotropy. Using micro-focused Brillouin light scattering and micromagnetic simulations, we show that broad 90° head-to-head or tail-to-tail magnetic domain walls are transparent to spin waves over a broad frequency range. In contrast, magnetic switching to a 90° head-to-tail configuration produces much narrower and strongly reflecting domain walls at the same pinning locations. Based on these results, we propose a magnetic spin-wave valve with two parallel domain walls. Switching the spin-wave valve from an open to a closed state changes the transmission of spin waves from nearly 100 to 0%. Active control over spin-wave transport through programmable domain walls could be utilized in magnonic logic devices or non-volatile memory elements. en
dc.format.extent 1-8
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Nature Communications en
dc.relation.ispartofseries Volume 9, issue 1 en
dc.rights openAccess en
dc.subject.other Chemistry(all) en
dc.subject.other Biochemistry, Genetics and Molecular Biology(all) en
dc.subject.other Physics and Astronomy(all) en
dc.subject.other 114 Physical sciences en
dc.title Control of spin-wave transmission by a programmable domain wall en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Nanomagnetism and Spintronics
dc.contributor.department University of Perugia
dc.contributor.department Department of Applied Physics en
dc.subject.keyword Chemistry(all)
dc.subject.keyword Biochemistry, Genetics and Molecular Biology(all)
dc.subject.keyword Physics and Astronomy(all)
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201812106257
dc.identifier.doi 10.1038/s41467-018-07372-x
dc.type.version publishedVersion

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