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Turkish Journal of Physics

CANER DEĞER

DOI

10.3906/fiz-1912-2

Abstract

In order to realize skyrmion-based next-generation logic and memory devices, investigating the impact of materialparametersonskyrmionformationisessential. Cappingmagneticthinlayersforthepurposesofbothpreventing oxidation and/or enhancing crystal structure has an influence on chiral spin texture of the layer. In this paper, we have carried out a systematic computational study on magnetic skyrmion and domain-wall formation in which 2-atomic layer of Co, deposited on Pt(111) substrate and capped by certain (Ta, Ir, and Pt) 5d elements with various thicknesses. We have determined the magnetic topography of the structures by simulations based on DFT-calculated parameters; micromagnetic Dzyaloshinskii-Moriya interaction, exchange interaction, and magnetic anisotropy coefficients. We have revealed the influence of capping material and thickness on the chiral spin texture. We anticipate that our predictions provide a rational basis for skyrmion-based devices in which skyrmions are used as logic or information element.

Keywords

Chiral spin textures, magnetic skyrmions, first-principles calculations, micromagnetic simulations

First Page

356

Last Page

363

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