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Ultrafast optical manipulation of magnetic order in ferromagnetic materials

The interaction between ultrafast lasers and magnetic materials is an appealing topic. It not only involves interesting fundamental questions that remain inconclusive and hence need further investigation, but also has the potential to revolutionize data storage technologies because such an opto-magn...

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Detalles Bibliográficos
Autores principales: Wang, Chuangtang, Liu, Yongmin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Singapore 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7655883/
https://www.ncbi.nlm.nih.gov/pubmed/33170368
http://dx.doi.org/10.1186/s40580-020-00246-3
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author Wang, Chuangtang
Liu, Yongmin
author_facet Wang, Chuangtang
Liu, Yongmin
author_sort Wang, Chuangtang
collection PubMed
description The interaction between ultrafast lasers and magnetic materials is an appealing topic. It not only involves interesting fundamental questions that remain inconclusive and hence need further investigation, but also has the potential to revolutionize data storage technologies because such an opto-magnetic interaction provides an ultrafast and energy-efficient means to control magnetization. Fruitful progress has been made in this area over the past quarter century. In this paper, we review the state-of-the-art experimental and theoretical studies on magnetization dynamics and switching in ferromagnetic materials that are induced by ultrafast lasers. We start by describing the physical mechanisms of ultrafast demagnetization based on different experimental observations and theoretical methods. Both the spin-flip scattering theory and the superdiffusive spin transport model will be discussed in detail. Then, we will discuss laser-induced torques and resultant magnetization dynamics in ferromagnetic materials. Recent developments of all-optical switching (AOS) of ferromagnetic materials towards ultrafast magnetic storage and memory will also be reviewed, followed by the perspectives on the challenges and future directions in this emerging area.
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spelling pubmed-76558832020-11-12 Ultrafast optical manipulation of magnetic order in ferromagnetic materials Wang, Chuangtang Liu, Yongmin Nano Converg Review The interaction between ultrafast lasers and magnetic materials is an appealing topic. It not only involves interesting fundamental questions that remain inconclusive and hence need further investigation, but also has the potential to revolutionize data storage technologies because such an opto-magnetic interaction provides an ultrafast and energy-efficient means to control magnetization. Fruitful progress has been made in this area over the past quarter century. In this paper, we review the state-of-the-art experimental and theoretical studies on magnetization dynamics and switching in ferromagnetic materials that are induced by ultrafast lasers. We start by describing the physical mechanisms of ultrafast demagnetization based on different experimental observations and theoretical methods. Both the spin-flip scattering theory and the superdiffusive spin transport model will be discussed in detail. Then, we will discuss laser-induced torques and resultant magnetization dynamics in ferromagnetic materials. Recent developments of all-optical switching (AOS) of ferromagnetic materials towards ultrafast magnetic storage and memory will also be reviewed, followed by the perspectives on the challenges and future directions in this emerging area. Springer Singapore 2020-11-10 /pmc/articles/PMC7655883/ /pubmed/33170368 http://dx.doi.org/10.1186/s40580-020-00246-3 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Review
Wang, Chuangtang
Liu, Yongmin
Ultrafast optical manipulation of magnetic order in ferromagnetic materials
title Ultrafast optical manipulation of magnetic order in ferromagnetic materials
title_full Ultrafast optical manipulation of magnetic order in ferromagnetic materials
title_fullStr Ultrafast optical manipulation of magnetic order in ferromagnetic materials
title_full_unstemmed Ultrafast optical manipulation of magnetic order in ferromagnetic materials
title_short Ultrafast optical manipulation of magnetic order in ferromagnetic materials
title_sort ultrafast optical manipulation of magnetic order in ferromagnetic materials
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7655883/
https://www.ncbi.nlm.nih.gov/pubmed/33170368
http://dx.doi.org/10.1186/s40580-020-00246-3
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