Manipulation of Magnetic Skyrmion Density in Continuous Ir/Co/Pt Multilayers.

Autor: Cubukcu M; National Physical Laboratory, Teddington TW11 0LW, UK.; London Centre for Nanotechnology, University College London, 17-19 Gordon Street, London WC1H 0AH, UK., Pöllath S; Institut für Experimentelle Physik, Universität Regensburg, D-93040 Regensburg, Germany., Tacchi S; Istituto Officina dei Materiali del CNR (CNR-IOM), Sede Secondaria di Perugia, c/o Dipartimento di Fisica e Geologia, Università di Perugia, I-06123 Perugia, Italy., Stacey A; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK., Darwin E; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK., Freeman CWF; National Physical Laboratory, Teddington TW11 0LW, UK.; London Centre for Nanotechnology, University College London, 17-19 Gordon Street, London WC1H 0AH, UK., Barton C; National Physical Laboratory, Teddington TW11 0LW, UK., Hickey BJ; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK., Marrows CH; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK., Carlotti G; Dipartimento di Fisica e Geologia, Università di Perugia, Via Pascoli, I-06123 Perugia, Italy., Back CH; Physik-Department, Technical University Munich, 85748 Garching, Germany., Kazakova O; National Physical Laboratory, Teddington TW11 0LW, UK.
Jazyk: angličtina
Zdroj: Micromachines [Micromachines (Basel)] 2022 Nov 04; Vol. 13 (11). Date of Electronic Publication: 2022 Nov 04.
DOI: 10.3390/mi13111911
Abstrakt: We show that magnetic skyrmions can be stabilised at room temperature in continuous [Ir/Co/Pt] 5 multilayers on SiO 2 /Si substrates without the prior application of electric current or magnetic field. While decreasing the Co thickness, a transition of the magnetic domain patterns from worm-like state to separated stripes is observed. The skyrmions are clearly imaged in both states using magnetic force microscopy. The density of skyrmions can be significantly enhanced after applying the "in-plane field procedure". Our results provide means to manipulate magnetic skyrmion density, further allowing for the optimised engineering of skyrmion-based devices.
Databáze: MEDLINE