Magnetic Response of an Ultrathin Cobalt Film in Contact with an Organic Pentacene Layer

被引:40
作者
Chan, Yuet-Loy [1 ]
Hung, Ya-Jyuan [1 ,2 ]
Wang, Chia-Hao [1 ,2 ]
Lin, Ying-Chang [1 ]
Chiu, Ching-Yuan [1 ]
Lai, Yu-Ling [1 ]
Chang, Hsu-Ting [1 ,2 ]
Lee, Chih-Hao [1 ,2 ]
Hsu, Y. J. [1 ,3 ]
Wei, D. H. [1 ]
机构
[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan
[2] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan
[3] Natl Cheng Kung Univ, Inst Electroopt Sci & Engn, Tainan 70101, Taiwan
关键词
SPIN INJECTION; GROWTH; METAL;
D O I
10.1103/PhysRevLett.104.177204
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
To emulate the interfacial regimes of a Co/Pc/Co spin-valve structure, we fabricated ultrathin pentacene/cobalt (Pc/Co) and cobalt/pentacene (Co/Pc) bilayers. Through measurement of the magneto-optical Kerr effect, we found the Co layer has its magnetic properties depend strongly upon the order of deposition. Further x-ray spectroscopy and microscopy investigation indicated Co/Pc was chemically stable, whereas Pc/Co was reactive and exhibited complex magnetization pattern. The different chemistry and magnetic configurations at interfaces could cause additional complication for spin injection.
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页数:4
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