自旋电子学
铁磁性
磁圆二色性
材料科学
反铁磁性
凝聚态物理
磁性半导体
原子轨道
电子
物理
量子力学
天文
谱线
作者
Sihua Feng,Hengli Duan,Hao Tan,Fengchun Hu,Chaocheng Liu,Yao Wang,Zhi Li,Liang Cai,Yong Cao,Chao Wang,Zeming Qi,Song Li,Xuguang Liu,Zhihu Sun,Wensheng Yan
标识
DOI:10.1038/s41467-023-42844-9
摘要
The development of two-dimensional (2D) magnetic semiconductors with room-temperature ferromagnetism is a significant challenge in materials science and is important for the development of next-generation spintronic devices. Herein, we demonstrate that a 2D semiconducting antiferromagnetic Cu-MOF can be endowed with intrinsic room-temperature ferromagnetic coupling using a ligand cleavage strategy to regulate the inner magnetic interaction within the Cu dimers. Using the element-selective X-ray magnetic circular dichroism (XMCD) technique, we provide unambiguous evidence for intrinsic ferromagnetism. Exhaustive structural characterizations confirm that the change of magnetic coupling is caused by the increased distance between Cu atoms within a Cu dimer. Theoretical calculations reveal that the ferromagnetic coupling is enhanced with the increased Cu-Cu distance, which depresses the hybridization between 3d orbitals of nearest Cu atoms. Our work provides an effective avenue to design and fabricate MOF-based semiconducting room-temperature ferromagnetic materials and promotes their practical applications in next-generation spintronic devices.
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