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|a 10.1002/adma.202301347
|2 doi
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|a pubmed24n1193.xml
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|a (DE-627)NLM358115922
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|a (NLM)37309900
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Anh, Le Duc
|e verfasserin
|4 aut
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|a Ultrafast Subpicosecond Magnetization of a 2D Ferromagnet
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 20.10.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Strong spin-charge interactions in several ferromagnets are expected to lead to subpicosecond (sub-ps) magnetization of the magnetic materials through control of the carrier characteristics via electrical means, which is essential for ultrafast spin-based electronic devices. Thus far, ultrafast control of magnetization has been realized by optically pumping a large number of carriers into the d or f orbitals of a ferromagnet; however, it is extremely challenging to implement by electrical gating. This work demonstrates a new method for sub-ps magnetization manipulation called wavefunction engineering, in which only the spatial distribution (wavefunction) of s (or p) electrons is controlled and no change is required in the total carrier density. Using a ferromagnetic semiconductor (FMS) (In,Fe)As quantum well (QW), instant enhancement, as fast as 600 fs, of the magnetization is observed upon irradiating a femtosecond (fs) laser pulse. Theoretical analysis shows that the instant enhancement of the magnetization is induced when the 2D electron wavefunctions (WFs) in the FMS QW are rapidly moved by a photo-Dember electric field formed by an asymmetric distribution of the photocarriers. Because this WF engineering method can be equivalently implemented by applying a gate electric field, these results open a new way to realize ultrafast magnetic storage and spin-based information processing in present electronic systems
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|a Journal Article
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|a 2D magnetism
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|a X-ray free-electron laser
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|a ferromagnetic semiconductors
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|a ultrafast magnetization
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|a wavefunction engineering of magnetization
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|a Kobayashi, Masaki
|e verfasserin
|4 aut
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|a Takeda, Takahito
|e verfasserin
|4 aut
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|a Araki, Kohsei
|e verfasserin
|4 aut
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|a Okano, Ryo
|e verfasserin
|4 aut
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|a Sumi, Toshihide
|e verfasserin
|4 aut
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|a Horio, Masafumi
|e verfasserin
|4 aut
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|a Yamamoto, Kohei
|e verfasserin
|4 aut
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|a Kubota, Yuya
|e verfasserin
|4 aut
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|a Owada, Shigeki
|e verfasserin
|4 aut
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|a Yabashi, Makina
|e verfasserin
|4 aut
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|a Matsuda, Iwao
|e verfasserin
|4 aut
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|a Tanaka, Masaaki
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 40 vom: 01. Okt., Seite e2301347
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:35
|g year:2023
|g number:40
|g day:01
|g month:10
|g pages:e2301347
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|u http://dx.doi.org/10.1002/adma.202301347
|3 Volltext
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