標題: Enhanced Magnetic Anisotropy via Quasi-Molecular Magnet at Organic-Ferromagnetic Contact
作者: Hsu, Yao-Jane
Lai, Yu-Ling
Chen, Chih-Han
Lin, Ying-Chang
Chien, Hsiu-Yun
Wang, Jeng-Han
Lam, Tu-Ngoc
Chan, Yuet-Loy
Wei, D. H.
Lin, Hong-Ji
Chen, Chien-Te
材料科學與工程學系奈米科技碩博班
Graduate Program of Nanotechnology , Department of Materials Science and Engineering
公開日期: 17-一月-2013
摘要: To realize the origin of efficient spin injection at organic-ferromagnetic contact in organic spintronics, we have implemented the formation of quasi-molecular magnet via surface restructuring of a strong organic acceptor, tetrafluoro-tetracyanoquinodimethane (F4-TCNQ), in contact with ferromagnetic cobalt. Our results demonstrate a spin-polarized F4-TCNQ layer and a remarkably enhanced magnetic anisotropy of the Co film. The novel magnetic properties are contributed from strong magnetic coupling caused by the molecular restructuring that displays an angular anchoring conformation of CN and upwardly protruding fluorine atoms. We conclude that the pi bonds of CN, instead of the lone-pair electrons of N atoms, contribute to the hybridization-induced magnetic coupling between CN and Co and generate a superior magnetic order on the surface.
URI: http://dx.doi.org/10.1021/jz301757x
http://hdl.handle.net/11536/21039
ISSN: 1948-7185
DOI: 10.1021/jz301757x
期刊: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume: 4
Issue: 2
起始頁: 310
結束頁: 316
顯示於類別:期刊論文


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