Enhanced spin signals due to native oxide formation in Ni80 Fe20 /Ag lateral spin valves

Goran Mihajlović; Daniel K. Schreiber; Yuzi Liu; John E. Pearson; Samuel D. Bader; Amanda K. Petford-Long; Axel Hoffmann

doi:10.1063/1.3484141

Enhanced spin signals due to native oxide formation in Ni80 Fe20 /Ag lateral spin valves

Goran Mihajlović^*, Daniel K. Schreiber, Yuzi Liu, John E. Pearson, Samuel D. Bader, Amanda K. Petford-Long, Axel Hoffmann

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Large nonlocal spin valve signals are reported in mesoscopic Ni80 Fe20 /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 Ni80 Fe20 /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.

Original language	English (US)
Article number	112502
Journal	Applied Physics Letters
Volume	97
Issue number	11
DOIs	https://doi.org/10.1063/1.3484141
State	Published - Sep 13 2010

Funding

We thank O. Mosendz, R. Winkler, and F. Fradin for many stimulating discussions. This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-06CH11357. The electron microscopy was accomplished at the Electron Microscopy Center for Materials Research at Argonne National Laboratory.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3484141

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title = "Enhanced spin signals due to native oxide formation in Ni80 Fe20 /Ag lateral spin valves",

abstract = "Large nonlocal spin valve signals are reported in mesoscopic Ni80 Fe20 /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 Ni80 Fe20 /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.",

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note = "Funding Information: We thank O. Mosendz, R. Winkler, and F. Fradin for many stimulating discussions. This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-06CH11357. The electron microscopy was accomplished at the Electron Microscopy Center for Materials Research at Argonne National Laboratory.",

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AU - Mihajlović, Goran

AU - Schreiber, Daniel K.

AU - Liu, Yuzi

AU - Pearson, John E.

AU - Bader, Samuel D.

AU - Petford-Long, Amanda K.

AU - Hoffmann, Axel

N1 - Funding Information: We thank O. Mosendz, R. Winkler, and F. Fradin for many stimulating discussions. This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-06CH11357. The electron microscopy was accomplished at the Electron Microscopy Center for Materials Research at Argonne National Laboratory.

PY - 2010/9/13

Y1 - 2010/9/13

N2 - Large nonlocal spin valve signals are reported in mesoscopic Ni80 Fe20 /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 Ni80 Fe20 /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.

AB - Large nonlocal spin valve signals are reported in mesoscopic Ni80 Fe20 /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 Ni80 Fe20 /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.

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Enhanced spin signals due to native oxide formation in Ni80 Fe20 /Ag lateral spin valves

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