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arXiv 2024年

作者： Yi, Yazhuo Huang, Haoliang Shao, Ruiwen Liu, Yukuai Chen, Guangzheng Ou, Jiahui Zhang, Xi Hua, Ze Chen, Lang Leung, Chi Wah Zeng, Xie-Rong Rao, Feng Liu, Nan Wang, Heng Si, Liang An, Hongyu Chen, Zhuoyu Huang, Chuanwei Shenzhen Key Laboratory of Special Functional Materials Guangdong Provincial Key Laboratory of New Energy Materials Service Safety College of Materials Science and Engineering Shenzhen University Shenzhen518060 China Department of Physics Southern University of Science and Technology Shenzhen518055 China Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area Shenzhen518045 China Beijing Advanced Innovation Center for Intelligent Robots and Systems School of Medical Technology Beijing Institute of Technology Beijing100081 China College of Electronic Information and Mechatronic Engineering Zhaoqing University Zhaoqing Road Duanzhou District Zhaoqing526061 China Electron Microscopy Centre of Shenzhen University Shenzhen University Shenzhen518060 China Department of Applied Physics The Hong Kong Polytechnic University Hung Hom Hong Kong School of Physics Northwest University Xi’an710127 China Institute of Solid State Physics TU Wien Vienna1040 Austria College of New Materials and New Energies Shenzhen Technology University Shenzhen518118 China

Ferromagnetism and electrical insulation are often at odds, signifying an inherent trade-off. The simultaneous optimization of both in one material, essential for advancing spintronics and topological electronics, necessitates the individual manipulation over various degrees of freedom of strongly correlated electrons. Here, by selective control of the spin exchange and Coulomb interactions, we report the achievement of SrFeO2 thin films with resistivity above 106 Ω∙cm and strong magnetization with Curie temperature extrapolated to be ~ 1200 K. Robust ferromagnetism is obtained down to ~1.0 nm thickness on substrate and ~ 2.0 nm for freestanding films. Featuring an out-of-plane oriented ripple-infinite-layer structure, this ferromagnetic insulating phase is obtained through extensive reduction of as-grown brownmillerite SrFeO2.5 films at high compressive strains. Pronounced spin Hall magnetoresistance signals up to ~ 2.6% is further demonstrated with a Pt Hall-bar device. Our findings promise emerging spintronic and topological electronic functionalities harnessing spin dynamics with minimized power dissipations. © 2024, CC BY.

关键词： Ferromagnetism

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Carbon Nanotubes: A Molecular Dynamics Study on Self‐Assembly of Single‐Walled Carbon Nanotubes: From Molecular Morphology and Binding Energy (Adv. Mater. Interfaces 19/2019)

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Advanced Materials Interfaces 2019年第19期6卷

作者： Jianwei Zhang Jianlei Cui Yang Cheng Wenjun Wang Xiaoqiao He Xuesong Mei State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049 P. R. China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou 310027 P. R. China Shaanxi Key Laboratory of Intelligent Robots Xi'an Jiaotong University Xi'an 710049 P. R. China State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University Shanghai 200240 P. R. China State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences Xi'an 710119 P. R. China Department of Architecture and Civil Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong

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