Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film

Abstract 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 fe...

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Autores principales:	Tomoaki Ishii, Hiromichi Yamakawa, Toshiki Kanaki, Tatsuya Miyamoto, Noriaki Kida, Hiroshi Okamoto, Masaaki Tanaka, Shinobu Ohya
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/861e5cec51844ba0ae89ff2844ced80c
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spelling	oai:doaj.org-article:861e5cec51844ba0ae89ff2844ced80c2021-12-02T11:40:55ZUltrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film10.1038/s41598-018-25266-22045-2322https://doaj.org/article/861e5cec51844ba0ae89ff2844ced80c2018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25266-2https://doaj.org/toc/2045-2322Abstract 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.Tomoaki IshiiHiromichi YamakawaToshiki KanakiTatsuya MiyamotoNoriaki KidaHiroshi OkamotoMasaaki TanakaShinobu OhyaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-6 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tomoaki Ishii Hiromichi Yamakawa Toshiki Kanaki Tatsuya Miyamoto Noriaki Kida Hiroshi Okamoto Masaaki Tanaka Shinobu Ohya Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film
description	Abstract 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	article
author	Tomoaki Ishii Hiromichi Yamakawa Toshiki Kanaki Tatsuya Miyamoto Noriaki Kida Hiroshi Okamoto Masaaki Tanaka Shinobu Ohya
author_facet	Tomoaki Ishii Hiromichi Yamakawa Toshiki Kanaki Tatsuya Miyamoto Noriaki Kida Hiroshi Okamoto Masaaki Tanaka Shinobu Ohya
author_sort	Tomoaki Ishii
title	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_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_sort	ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/861e5cec51844ba0ae89ff2844ced80c
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Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film

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