Authors:	Ognev, Alexey V. Kolesnikov, Alexander G. Kim, Yong Jin Cha, In Ho Sadovnikov, Alexandr V. Nikitov, S. A. Soldatov, I. V. Talapatra, Abhishek Mohanty, Jasmine Mruczkiewicz, Michal Ge, Yuqing Kerber, Nico Dittrich, Florian Virnau, Peter Kläui, Mathias Kim, Young Keun Samardak, A. S.
Title:	Magnetic direct-write skyrmion nanolithography
Online publication date:	20-Dec-2021
Year of first publication:	2020
Language:	english
Abstract:	Magnetic skyrmions are stable spin textures with quasi-particle behavior and attract significant interest in fundamental and applied physics. The metastability of magnetic skyrmions at zero magnetic field is particularly important to enable, for instance, a skyrmion racetrack memory. Here, the results of the nucleation of stable skyrmions and formation of ordered skyrmion lattices by magnetic force microscopy in (Pt/CoFeSiB/W)(n) multilayers, exploiting the additive effect of the interfacial Dzyaloshinskii-Moriya interaction, are presented. The appropriate conditions under which skyrmion lattices are confined with a dense two-dimensional liquid phase are identified. A crucial parameter to control the skyrmion lattice characteristics and the number of scans resulting in the complete formation of a skyrmion lattice is the distance between two adjacent scanning lines of a magnetic force microscopy probe. The creation of skyrmion patterns with complex geometry is demonstrated, and the physical mechanism of direct magnetic writing of skyrmions is comprehended by micromagnetic simulations. This study shows a potential of a direct-write (maskless) skyrmion (topological) nanolithography with sub-100 nm resolution, where each skyrmion acts as a pixel in the final topological image.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-5683
Version:	Accepted version
Publication type:	Zeitschriftenaufsatz
Document type specification:	Scientific article
License:	In Copyright
Information on rights of use:	http://rightsstatements.org/vocab/InC/1.0/
Journal:	ACS nano 14 11
Pages or article number:	14960 14970
Publisher:	Soc.
Publisher place:	Washington, DC
Issue date:	2020
ISSN:	1936-0851
Publisher URL:	https://pubs.acs.org/doi/abs/10.1021/acsnano.0c04748
Publisher DOI:	10.1021/acsnano.0c04748
Appears in collections:	JGU-Publikationen