Universität zu Köln

Diaz, Sebastian A., Hirosawa, Tomoki ORCID: 0000-0003-4525-586X, Loss, Daniel ORCID: 0000-0001-5176-3073 and Psaroudaki, Christina ORCID: 0000-0002-7073-6422 (2020). Spin Wave Radiation by a Topological Charge Dipole. Nano Lett., 20 (9). S. 6556 - 6563. WASHINGTON: AMER CHEMICAL SOC. ISSN 1530-6992

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Abstract

The use of spin waves (SWs) data carriers in spintronic and magnonic logic devices offers operation at low power consumption, free of Joule heating. Nevertheless, the controlled emission and propagation of SWs im magnetic materials remains a significant challenge. Here, we propose that skyrmion-antiskyrmion bilayers form topological charge dipoles and. act as efficient sub-100 nm SW emitters when excited by in-plane acwith fields. The propagating SANS have a preferred radiation direction, with clear dipole signatures in their radiation pattern, suggesting that the, bilayer forms a SW antenna. Bilayers with the same topological charge radiate SWs with spiral and antispiral spatial profiles, enlarging the class of SW patterns. We demonstrate that the characteristics of the emitted SWs are linked to the topology of the source, allowing for full control of the SW features including their amplitude, preferred direction of propagation' and wavelength.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Diaz, Sebastian A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hirosawa, Tomoki UNSPECIFIED orcid.org/0000-0003-4525-586X UNSPECIFIED Loss, Daniel UNSPECIFIED orcid.org/0000-0001-5176-3073 UNSPECIFIED Psaroudaki, Christina UNSPECIFIED orcid.org/0000-0002-7073-6422 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-319475
DOI:	10.1021/acs.nanolett.0c02192
Journal or Publication Title:	Nano Lett.
Volume:	20
Number:	9
Page Range:	S. 6556 - 6563
Date:	2020
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1530-6992
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SKYRMIONS Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31947