Ultrafast optical observation of spin-pumping induced dynamic exchange coupling in ferromagnetic semiconductor/metal bilayer

Liu, X.; Liu, P.; Yuan, Hongling; Shi, J. Y.; Wang, H. L.; Nie, Shuaihua; Jin, Feng; Zheng, Zhe; Yu, Xingxing; Zhao, Jianhua; Zhao, Haibin; Lüpke, G.

doi:10.1038/s41598-022-19378-z

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…For example, Liu et al investigated the magnetization precession dynamics of the Co 2 FeAl/FM semiconductor (Ga,Mn)As heterostructure using the time-resolved magneto- optical Kerr effect (TRMOKE). 184 They performed their studies at various applied field strengths and temperatures.…”

Section: Ultrafast Pump Light Modulation Of Magnetismmentioning

confidence: 99%

“…(g) TRMOKE data from Co 2 FeAl/(Ga,Mn)As bilayer under the different intensity of the applied field. Reprinted with permission under a Creative Commons CC BY license from ref . Copyright 2022, Liu et al…”

Section: Development Of Optical Controllable Magnetism Devicesmentioning

confidence: 99%

“…Based on the two mechanisms of the inverse Faraday effect and spin–orbit torque, ultrafast pump light can be used in the fields of condensed matter physics and material science, particularly in researching magnetic materials and phenomena like spintronics, ultrafast magnetic recording, and the development of magnetic materials with high-speed response properties. For example, Liu et al investigated the magnetization precession dynamics of the Co 2 FeAl/FM semiconductor (Ga,Mn)As heterostructure using the time-resolved magneto-optical Kerr effect (TRMOKE) . They performed their studies at various applied field strengths and temperatures.…”

Section: Development Of Optical Controllable Magnetism Devicesmentioning

confidence: 99%

See 2 more Smart Citations

Perspectives: Light Control of Magnetism and Device Development

Fang,

Wu,

Zhang

et al. 2024

ACS Nano

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Accurately controlling magnetic and spin states presents a significant challenge in spintronics, especially as demands for higher data storage density and increased processing speeds grow. Approaches such as light control are gradually supplanting traditional magnetic field methods. Traditionally, the modulation of magnetism was predominantly achieved through polarized light with the help of ultrafast light technologies. With the growing demand for energy efficiency and multifunctionality in spintronic devices, integrating photovoltaic materials into magnetoelectric systems has introduced more physical effects. This development suggests that sunlight will play an increasingly pivotal role in manipulating spin orientation in the future. This review introduces and concludes the influence of various light types on magnetism, exploring mechanisms such as magneto-optical (MO) effects, light-induced magnetic phase transitions, and spin photovoltaic effects. This review briefly summarizes recent advancements in the light control of magnetism, especially sunlight, and their potential applications, providing an optimistic perspective on future research directions in this area.

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Section: Ultrafast Pump Light Modulation Of Magnetismmentioning

confidence: 99%

Section: Development Of Optical Controllable Magnetism Devicesmentioning

confidence: 99%

Section: Development Of Optical Controllable Magnetism Devicesmentioning

confidence: 99%

See 1 more Smart Citation

Perspectives: Light Control of Magnetism and Device Development

Fang,

Wu,

Zhang

et al. 2024

ACS Nano

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Concomitant modulation of interlayer exchange coupling and Gilbert damping in Fe/CoO with spin conductor Ag layer at interface

Zhao

Xia

et al. 2023

Applied Physics Letters

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We report on the modulation of interlayer exchange coupling (IEC) between the ferromagnet (FM) Fe and insulating antiferromagnet (AFM) CoO and its impact on the Gilbert damping by a time-resolved magneto-optical Kerr effect technique. By inserting a wedge spin conductor Ag layer at the interface of Fe/CoO, it is revealed that both uniform spin precession frequency and Gilbert damping constant of Fe film decrease with increasing Ag thickness up to ∼2 nm, and above that with eliminated IEC, these two parameters reach the intrinsic values of the Fe film. The precession frequency and damping also show similar variation tendency with temperature for attenuated IEC. These results prove that the exchange coupling at the FM–AFM interface plays an essential role for the spin angular momentum transfer to the insulating AFM layer, and the spin pumping is insignificant even for the very thin spin conductor layer. Our findings may have general insights into the role of the FM/AFM interface in the magnetization dynamics and spin angular momentum transfer for future spintronic applications.

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Ultrafast optical observation of spin-pumping induced dynamic exchange coupling in ferromagnetic semiconductor/metal bilayer

Cited by 2 publications

References 20 publications

Perspectives: Light Control of Magnetism and Device Development

Perspectives: Light Control of Magnetism and Device Development

Concomitant modulation of interlayer exchange coupling and Gilbert damping in Fe/CoO with spin conductor Ag layer at interface

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