Sunlight Control of Ferromagnetic Damping in Photovoltaic/Ferromagnetic Heterostructures
Sunlight Control of Ferromagnetic Damping in Photovoltaic/Ferromagnetic Heterostructures
复制标题
光伏/铁磁异质结构中铁磁阻尼的阳光控制
DOI：
10.1002/adfm.202111652
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发表时间：
2022-01-05
影响因子：
19
通讯作者：
Zhou, Ziyao
中科院分区：
文献类型：
--
作者：
Li, Chunlei;Li, Yaojin;Zhou, Ziyao
发展有效的自旋控制方法是自旋电子学发展的必然趋势。例如，由太阳光驱动的光伏自旋电子学在节能应用中具有巨大潜力。在Si衬底上制备了Ta（4 nm）/Co（1 nm）/ZnO（10 ~ 58 nm）/PTB_（7-Th）：PC_（71）BM/Pt（3 nm）铁磁/光伏异质结，研究了可见光对磁动力学的影响。通过优化用于增强电子转移的ZnO薄膜的厚度，实现了高达812.55 Oe的线宽变化。由于光伏效应，显示可逆的铁磁共振（FMR）线宽开关，这归因于钴的3d轨道占位感生的TMS贡献和不均匀的加宽。本工作提出了一种太阳光可控的磁阻尼异质结，用于开发快速，小型，节能的自旋电子学应用。
The inexorable trend of spintronics is to develop efficient spin-control methods. For example, photovoltaic spintronics driven by sunlight has great potential in energy-saving applications. Here, a ferromagnetic/PV heterojunction is prepared on Si-substrate as Ta (4 nm)/Co (1 nm)/ZnO (from 10 to 58 nm)/PTB7-Th: PC71BM/Pt (3 nm) to study how visible light affected magnetic dynamics. A linewidth variation as high as 812.55 Oe is achieved by optimizing the thickness of ZnO film used to enhance the electron transfer. Due to the photovoltaic effect, reversible ferromagnetic resonance (FMR) linewidth switches are displayed, which is attributed to the 3d orbitals occupancy of Co induced the TMS contribution and inhomogeneous broadening. This work proposes a sunlight controllable magnetic damping heterostructure for developing fast, small, energy-efficient spintronics applications.