Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1801552 | Journal of Magnetism and Magnetic Materials | 2010 | 4 Pages |
Abstract
A temporal evolution of spin signals has been observed in nanoscale Co/Cu nonlocal spin valves. The spin diffusion length of Cu increases from â¼300 to â¼350Â nm measured at 295Â K over a 50-day period in the ambient environment after the fabrication of the devices. This is attributed to a gradual oxidation in the regions near the side surfaces of the Cu channel, where Co impurities are implanted during the fabrication. An increase of spin injection polarization is also found and attributed to the change of oxidation states at the interfaces.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
X.J. Wang, H. Zou, Y. Ji,