Spin-current-induced magnetotransport in Co-Cu-Co nanostructures

Author

Mancoff, Frederick B. ; Russek, Stephen E.

Author_Institution

Motorola Phys. Sci. Res. Labs., Tempe, AZ, USA

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2853

Lastpage

2855

Abstract

We report measurements on sub-100-nm Co-Cu-Co spin-valves with the current perpendicular-to-plane. The giant magnetoresistance versus applied magnetic field shows switching in the individually patterned Co nanomagnets. Spin-transfer from the spin-polarized current to the nanomagnets becomes significant for large currents and small devices. The resistance versus applied current shows spin-transfer effects, including current-induced nanomagnet switching and resistance steps indicative of current-induced magnetic precession.

Keywords

cobalt; copper; giant magnetoresistance; magnetic anisotropy; magnetic multilayers; magnetic switching; nanostructured materials; spin valves; 80 nm; Co-Cu-Co; Co-Cu-Co nanostructures; Co-Cu-Co spin-valves; applied magnetic field; current-induced magnetic precession; current-induced nanomagnet switching; giant magnetoresistance; individually patterned Co nanomagnets; large currents; perpendicular-to-plane current; resistance; resistance steps; small devices; spin-current-induced magnetotransport; spin-polarized current; spin-transfer; switching; Current measurement; Electrical resistance measurement; Electrodes; Giant magnetoresistance; Gold; Immune system; Magnetic field measurement; Magnetic switching; Nanoscale devices; Nanostructures;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802861

Filename

1042385