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Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film
High-speed magnetization control of ferromagnetic films using light pulses is attracting considerable attention and is increasingly important for the development of spintronic devices. Irradiation with a nearly monocyclic terahertz pulse, which can induce strong electromagnetic fields in ferromagnet...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5931997/ https://www.ncbi.nlm.nih.gov/pubmed/29720716 http://dx.doi.org/10.1038/s41598-018-25266-2 |
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author | Ishii, Tomoaki Yamakawa, Hiromichi Kanaki, Toshiki Miyamoto, Tatsuya Kida, Noriaki Okamoto, Hiroshi Tanaka, Masaaki Ohya, Shinobu |
author_facet | Ishii, Tomoaki Yamakawa, Hiromichi Kanaki, Toshiki Miyamoto, Tatsuya Kida, Noriaki Okamoto, Hiroshi Tanaka, Masaaki Ohya, Shinobu |
author_sort | Ishii, Tomoaki |
collection | PubMed |
description | High-speed magnetization control of ferromagnetic films using light pulses is attracting considerable attention and is increasingly important for the development of spintronic devices. Irradiation with a nearly monocyclic terahertz pulse, which can induce strong electromagnetic fields in ferromagnetic films within an extremely short time of less than ~1 ps, is promising for damping-free high-speed coherent control of the magnetization. Here, we successfully observe a terahertz response in a ferromagnetic-semiconductor thin film. In addition, we find that a similar terahertz response is observed even in a non-magnetic semiconductor and reveal that the electric-field component of the terahertz pulse plays a crucial role in the magnetization response through the spin-carrier interactions in a ferromagnetic-semiconductor thin film. Our findings will provide new guidelines for designing materials suitable for ultrafast magnetization reversal. |
format | Online Article Text |
id | pubmed-5931997 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59319972018-08-29 Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film Ishii, Tomoaki Yamakawa, Hiromichi Kanaki, Toshiki Miyamoto, Tatsuya Kida, Noriaki Okamoto, Hiroshi Tanaka, Masaaki Ohya, Shinobu Sci Rep Article High-speed magnetization control of ferromagnetic films using light pulses is attracting considerable attention and is increasingly important for the development of spintronic devices. Irradiation with a nearly monocyclic terahertz pulse, which can induce strong electromagnetic fields in ferromagnetic films within an extremely short time of less than ~1 ps, is promising for damping-free high-speed coherent control of the magnetization. Here, we successfully observe a terahertz response in a ferromagnetic-semiconductor thin film. In addition, we find that a similar terahertz response is observed even in a non-magnetic semiconductor and reveal that the electric-field component of the terahertz pulse plays a crucial role in the magnetization response through the spin-carrier interactions in a ferromagnetic-semiconductor thin film. Our findings will provide new guidelines for designing materials suitable for ultrafast magnetization reversal. Nature Publishing Group UK 2018-05-02 /pmc/articles/PMC5931997/ /pubmed/29720716 http://dx.doi.org/10.1038/s41598-018-25266-2 Text en © The Author(s) 2018 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Ishii, Tomoaki Yamakawa, Hiromichi Kanaki, Toshiki Miyamoto, Tatsuya Kida, Noriaki Okamoto, Hiroshi Tanaka, Masaaki Ohya, Shinobu Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
title | Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
title_full | Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
title_fullStr | Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
title_full_unstemmed | Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
title_short | Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
title_sort | ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5931997/ https://www.ncbi.nlm.nih.gov/pubmed/29720716 http://dx.doi.org/10.1038/s41598-018-25266-2 |
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