Control of spin-wave transmission by a programmable domain wall

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Control of spin-wave transmission by a programmable domain wall. / Hämäläinen, Sampo J.; Madami, Marco; Qin, Huajun; Gubbiotti, Gianluca; van Dijken, Sebastiaan.

julkaisussa: Nature Communications, Vuosikerta 9, Nro 1, 19.11.2018, s. 1-8.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{badd206a85d4463c990ed71363c24334,
title = "Control of spin-wave transmission by a programmable domain wall",
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° N{\'e}el 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.",
author = "H{\"a}m{\"a}l{\"a}inen, {Sampo J.} and Marco Madami and Huajun Qin and Gianluca Gubbiotti and {van Dijken}, Sebastiaan",
year = "2018",
month = "11",
day = "19",
doi = "10.1038/s41467-018-07372-x",
language = "English",
volume = "9",
pages = "1--8",
journal = "Nature Communications",
issn = "2041-1723",
number = "1",

}

RIS - Lataa

TY - JOUR

T1 - Control of spin-wave transmission by a programmable domain wall

AU - Hämäläinen, Sampo J.

AU - Madami, Marco

AU - Qin, Huajun

AU - Gubbiotti, Gianluca

AU - van Dijken, Sebastiaan

PY - 2018/11/19

Y1 - 2018/11/19

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85056722160&partnerID=8YFLogxK

U2 - 10.1038/s41467-018-07372-x

DO - 10.1038/s41467-018-07372-x

M3 - Article

VL - 9

SP - 1

EP - 8

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

ER -

ID: 30130246