期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 46, 期 32, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/46/32/325003
关键词
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资金
- Japan Society for the Promotion of Science (JSPS)
- National Nature Science Foundation of China [11274101, 51002047]
- Department of Education of Hubei Province [Q20081005]
Here, we use half-metallic Co2MnSi (CMS) ferromagnets to prepare CMS/Ag non-local lateral spin valve devices. By optimizing the structural property of CMS wires and the interface quality, device structure of CMS/Ag spin valves, large spin resistance about 4.2m Omega can be observed clearly at room temperature when the gap length of two CMS wires is 200 nm. By fitting the spin accumulation signals, we obtained that the spin diffusion length for Ag wire is 290 nm and the spin polarization for CMS wires is 74%. These results indicate that half-metallic ferromagnetic materials can be used in semiconductor-based spin devices.
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