Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film.
Ultrafast magnetization modulation induced by the electric field component of a terahertz pulse in a ferromagnetic-semiconductor thin film.
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DOI:
10.1038/s41598-018-25266-2
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发表时间:
2018-05-02
影响因子:
4.6
通讯作者:
Ohya S
中科院分区:
文献类型:
--
作者:
Ishii T;Yamakawa H;Kanaki T;Miyamoto T;Kida N;Okamoto H;Tanaka M;Ohya S
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.
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影响因子:
4
作者:
Chiba, D.;Matsukura, F.;Ohno, H.
通讯作者:
Ohno, H.
影响因子:
8.6
作者:
Bonetti, S.;Hoffmann, M. C.;Durr, H. A.
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Durr, H. A.
影响因子:
3.3
作者:
Shalaby, Mostafa;Vicario, Carlo;Hauri, Christoph P.
通讯作者:
Hauri, Christoph P.
影响因子:
4
作者:
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Tanaka, K.
影响因子:
3.8
作者:
Hebling, J;Almási, G;Kuhl, J
通讯作者:
Kuhl, J