Dynamics of all-optically switched magnetic domains in Co/Gd heterostructures with Dzyaloshinskii-Moriya interaction

Anni Cao, Youri L.W. Van Hees, Reinoud Lavrijsen, Weisheng Zhao (Corresponding author), Bert Koopmans (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

7 Citaten (Scopus)
161 Downloads (Pure)

Samenvatting

Given the development of hybrid spintronic-photonic devices and optical manipulation of chiral magnetic textures, a combined interest in single-pulse all-optical switching (AOS) of magnetization and current-induced domain wall motion in synthetic ferrimagnetic structures with strong Dzyaloshinskii-Moriya Interaction (DMI) is emerging. In this work, we explore the role of the DMI on the AOS process as well as the stability of optically written micromagnetic domains using specially engineered Co/Gd-based multilayer structures. Quantitative insight is obtained by measuring the interesting dynamics in moon-shaped structures written by two successive laser pulses. The stability of domains resulting from an interplay between the dipolar interaction and domain-wall energy are compared to simple analytical models and micromagnetic simulations. A shortening process occurring at ns time scale is confirmed by our computational results, and a stabilizing role of DMI on microscopic AOS-written domains is experimentally demonstrated.

Originele taal-2Engels
Artikelnummer104412
Aantal pagina's10
TijdschriftPhysical Review B
Volume102
Nummer van het tijdschrift10
DOI's
StatusGepubliceerd - sep. 2020

Financiering

The authors thank the National Key R&D Program of China, Grant No. 2018YFB0407602, the National Natural Science Foundation of China (Grant No. 61571023), the International Collaboration Project B16001, the National Key Technology Program of China Grant No. 2017ZX01032101, the Program of Introducing Talents of Discipline to Universities in China (Grant No. B16001), the VR innovation platform from Qingdao Science and Technology Commission and the China Scholarship Council.

FinanciersFinanciernummer
Qingdao Science and Technology Commission
National Natural Science Foundation of ChinaB16001, 61571023
China Scholarship Council
National Key Research and Development Program of China2017ZX01032101, 2018YFB0407602
Project 211

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