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Ultrafast demagnetization in ferromagnetic materials: Origins and progress.

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Title: Ultrafast demagnetization in ferromagnetic materials: Origins and progress.
Authors: Chen, Xiaowen1,2,3 (AUTHOR), Adam, Roman1,4 (AUTHOR), Bürgler, Daniel E.4 (AUTHOR), Wang, Fangzhou1,4 (AUTHOR), Lu, Zhenyan5 (AUTHOR), Pan, Lining6 (AUTHOR), Heidtfeld, Sarah4 (AUTHOR), Greb, Christian4 (AUTHOR), Liu, Meihong7 (AUTHOR), Liu, Qingfang7 (AUTHOR), Wang, Jianbo7,8 (AUTHOR), Schneider, Claus M.4,9,10 (AUTHOR), Cao, Derang1,2,4,8 (AUTHOR) caodr@qdu.edu.cn
Source: Physics Reports. Jan2025, Vol. 1102, p1-63. 63p.
Subjects: Ferromagnetic materials, Attosecond pulses, Magnetic storage, Demagnetization, Time-resolved spectroscopy
Abstract: Since the discovery of ultrafast demagnetization in Ni thin films in 1996, laser-induced ultrafast spin dynamics have become a prominent research topic in the field of magnetism and spintronics. This development offers new possibilities for the advancement of spintronics and magnetic storage technology. The subject has drawn a substantial number of researchers, leading to a series of research endeavors. Various models have been proposed to elucidate the physical processes underlying laser-induced ultrafast spin dynamics in ferromagnetic materials. However, the potential origins of these processes across different material systems and the true contributions of these different origins remain challenging in the realm of ultrafast spin dynamics. This predicament also hinders the development of spintronic terahertz emitters. In this review, we initially introduce the different experimental methods used in laser-induced ultrafast spin dynamics. We then systematically explore the magnetization precession process and present seven models of ultrafast demagnetization in ferromagnetic materials. Subsequently, we discuss the physical processes and research status of four ultrafast demagnetization origins (including spin-flipping, spin transport, non-thermal electronic distribution, and laser-induced lattice strain). Since attosecond laser technique and antiferromagnetic materials exhibit promising applications in ultrahigh-frequency spintronics, we acknowledge the emerging studies used by attosecond pulses and studies on ultrafast spin dynamics in antiferromagnets, noting the significant challenges that need to be addressed in these burgeoning field. [ABSTRACT FROM AUTHOR]
Copyright of Physics Reports is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 182264686
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PubType: Academic Journal
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  Data: Ultrafast demagnetization in ferromagnetic materials: Origins and progress.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Xiaowen%22">Chen, Xiaowen</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adam%2C+Roman%22">Adam, Roman</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bürgler%2C+Daniel+E%2E%22">Bürgler, Daniel E.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Fangzhou%22">Wang, Fangzhou</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Zhenyan%22">Lu, Zhenyan</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Lining%22">Pan, Lining</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Heidtfeld%2C+Sarah%22">Heidtfeld, Sarah</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Greb%2C+Christian%22">Greb, Christian</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Meihong%22">Liu, Meihong</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Qingfang%22">Liu, Qingfang</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Jianbo%22">Wang, Jianbo</searchLink><relatesTo>7,8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schneider%2C+Claus+M%2E%22">Schneider, Claus M.</searchLink><relatesTo>4,9,10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Derang%22">Cao, Derang</searchLink><relatesTo>1,2,4,8</relatesTo> (AUTHOR)<i> caodr@qdu.edu.cn</i>
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  Data: Since the discovery of ultrafast demagnetization in Ni thin films in 1996, laser-induced ultrafast spin dynamics have become a prominent research topic in the field of magnetism and spintronics. This development offers new possibilities for the advancement of spintronics and magnetic storage technology. The subject has drawn a substantial number of researchers, leading to a series of research endeavors. Various models have been proposed to elucidate the physical processes underlying laser-induced ultrafast spin dynamics in ferromagnetic materials. However, the potential origins of these processes across different material systems and the true contributions of these different origins remain challenging in the realm of ultrafast spin dynamics. This predicament also hinders the development of spintronic terahertz emitters. In this review, we initially introduce the different experimental methods used in laser-induced ultrafast spin dynamics. We then systematically explore the magnetization precession process and present seven models of ultrafast demagnetization in ferromagnetic materials. Subsequently, we discuss the physical processes and research status of four ultrafast demagnetization origins (including spin-flipping, spin transport, non-thermal electronic distribution, and laser-induced lattice strain). Since attosecond laser technique and antiferromagnetic materials exhibit promising applications in ultrahigh-frequency spintronics, we acknowledge the emerging studies used by attosecond pulses and studies on ultrafast spin dynamics in antiferromagnets, noting the significant challenges that need to be addressed in these burgeoning field. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Physics Reports is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.physrep.2024.10.008
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      – Code: eng
        Text: English
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        PageCount: 63
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    Subjects:
      – SubjectFull: Ferromagnetic materials
        Type: general
      – SubjectFull: Attosecond pulses
        Type: general
      – SubjectFull: Magnetic storage
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      – SubjectFull: Demagnetization
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      – SubjectFull: Time-resolved spectroscopy
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