Enhanced spin signals due to native oxide formation in Ni{sub 80}Fe{sub 20}/Ag lateral spin valves.
Large nonlocal spin valve signals are reported in mesoscopic Ni{sub 80}Fe{sub 20}/Ag lateral spin valves upon exposing them to air. Magnetotransport measurements combined with transmission electron microscopy show that the formation of a native oxide layer at the Ni{sub 80}Fe{sub 20}/Ag interface is responsible for the large signals. The results indicate that lateral spin valves with superior performance to those based on high-resistance tunnel barriers can be achieved via controllable growth of native permalloy oxides.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 992401
- Report Number(s):
- ANL/MSD/JA-67719; TRN: US201022%%299
- Journal Information:
- Appl. Phys. Lett., Vol. 97, Issue 2010
- Country of Publication:
- United States
- Language:
- ENGLISH
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