Universität zu Köln

Mueller, Jan, Rajeswari, Jayaraman, Huang, Ping ORCID: 0000-0002-5295-8216, Murooka, Yoshie, Ronnow, Henrik M., Carbone, Fabrizio and Rosch, Achim ORCID: 0000-0002-6586-5721 (2017). Magnetic Skyrmions and Skyrmion Clusters in the Helical Phase of Cu2OSeO3. Phys. Rev. Lett., 119 (13). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

Skyrmions are nanometric spin whirls that can be stabilized in magnets lacking inversion symmetry. The properties of isolated Skyrmions embedded in a ferromagnetic background have been intensively studied. We show that single Skyrmions and clusters of Skyrmions can also form in the helical phase and investigate theoretically their energetics and dynamics. The helical background provides natural one-dimensional channels along which a Skyrmion can move rapidly. In contrast to Skyrmions in ferromagnets, the Skyrmion-Skyrmion interaction has a strong attractive component and thus Skyrmions tend to form clusters with characteristic shapes. These clusters are directly observed in transmission electron microscopy measurements in thin films of Cu2OSeO3. Topological quantization, high mobility, and the confinement of Skyrmions in channels provided by the helical background may be useful for future spintronics devices.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mueller, Jan UNSPECIFIED UNSPECIFIED UNSPECIFIED Rajeswari, Jayaraman UNSPECIFIED UNSPECIFIED UNSPECIFIED Huang, Ping UNSPECIFIED orcid.org/0000-0002-5295-8216 UNSPECIFIED Murooka, Yoshie UNSPECIFIED UNSPECIFIED UNSPECIFIED Ronnow, Henrik M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Carbone, Fabrizio UNSPECIFIED UNSPECIFIED UNSPECIFIED Rosch, Achim UNSPECIFIED orcid.org/0000-0002-6586-5721 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-217401
DOI:	10.1103/PhysRevLett.119.137201
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	119
Number:	13
Date:	2017
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DYNAMICS; LATTICE; STABILITY; CRYSTALS; DOMAINS; MOTION; STATES Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21740