Systematic Control of Ferrimagnetic Skyrmions via Composition Modulation in Pt/Fe_{1–x}Tb_{x}/Ta Multilayers

Teng Xu; Yuxuan Zhang; Zidong Wang; Hao Bai; Chengkun Song; Jiahao Liu; Yan Zhou; Soong-Geun Je; Alpha T. N’Diaye; Mi-Young Im; Rong Yu; Zhen Chen; Wanjun Jiang

doi:10.1021/acsnano.3c02006

journal article·2023-04-25Open access

Systematic Control of Ferrimagnetic Skyrmions via Composition Modulation in Pt/Fe_1–xTb_x/Ta Multilayers

Teng Xu, Yuxuan Zhang, Zidong Wang, Hao Bai, Chengkun Song, Jiahao Liu, Yan Zhou, Soong-Geun Je, Alpha T. N’Diaye, Mi-Young Im, Rong Yu, Zhen Chen, Wanjun Jiang

ACS Nano· Volume 17· Issue 8

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Source abstract

Abstract

Magnetic skyrmions are topological spin textures that can be used as memory and logic components for advancing the next generation spintronics. In this regard, control of nanoscale skyrmions, including their sizes and densities, is of particular importance for enhancing the storage capacity of skyrmionic devices. Here, we propose a viable route for engineering ferrimagnetic skyrmions via tuning the magnetic properties of the involved ferrimagnets Fe 1 –x Tb x . Via tuning the composition of Fe 1 –x Tb x that alters the magnetic anisotropy and the saturation magnetization, the size of the ferrimagnetic skyrmion ( d s ) and the average density (η s ) can be effectively tailored in [Pt/Fe 1 –x Tb x /Ta] 10 multilayers. In particular, a stabilization of sub-50 nm skyrmions with a high density is demonstrated at room temperature. Our work provides an effective approach for designing ferrimagnetic skyrmions with the desired size and density, which could be useful for enabling high-density ferrimagnetic skyrmionics.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Magnetic properties of thin films · Metallic Glasses and Amorphous Alloys · Magnetic Properties and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China

Frontier Science Center for Quantum Information, Tsinghua University, Beijing 100084, China

School of Materials Science and Engineering, The State Key Laboratory of New Ceramics and Fine Processing, MOE Key Laboratory of Advanced Materials, Tsinghua University, Beijing 100084, China

School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China

Lawrence Berkeley National Laboratory, Cyclotron Road, Berkeley, California 94720, United States

Collaborative Innovation Center of Quantum Matter, Beijing 100084, China

Funding

Ministry of Science and Technology of the People's Republic of China · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Natural Science Foundation of Beijing Municipality · Beijing Innovation Center for Future Chips, Tsinghua University

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