Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications
Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications
复制标题
太阳能驱动自旋电子应用中界面磁性的阳光控制
DOI：
10.1002/advs.201901994
复制
发表时间：
2019
期刊：
影响因子：
15.1
通讯作者：
Liu Ming
中科院分区：
文献类型：
--
作者：
Zhao Yifan;Zhao Shishun;Wang Lei;Zhou Ziyao;Liu Junxue;Min Tai;Peng Bin;Hu Zhongqiang;Jin Shengye;Liu Ming
The inexorable trend of next generation spintronics is to develop smaller, lighter, faster, and more energy efficient devices. Ultimately, spintronics driven by free energy, for example, solar power, is imperative. Here, a prototype photovoltaic spintronic device with an optical‐magneto‐electric tricoupled photovoltaic/magnetic thin film heterojunction, where magnetism can be manipulated directly by sunlight via interfacial effect, is proposed. The magnetic anisotropy is reduced evidenced by the out‐of‐plane ferromagnetic resonance (FMR) field change of 640.26 Oe under 150 mW cm−2 illumination via in situ electron spin resonance (ESR) method. The transient absorption analysis and the first‐principles calculation reveal that the photovoltaic electrons doping in the cobalt film alter the band filling of this ferromagnetic film. The findings provide a new path of electron doping control magnetism and demonstrate an optical‐magnetic dual controllable logical switch with limited energy supply, which may further transform the landscape of spintronics research.
