Normal and inverse current-induced magnetization switching in a single nanopillar

Dassow, H.; Buchmeier, M.; Schneider, C. M.; van der Hart, A.; Grünberg, P. A.; Lehndorff, R.; Bürgler, D. E.

doi:10.1063/1.2398923

Journal Article

Normal and inverse current-induced magnetization switching in a single nanopillar

Dassow, H.FZJ* ; Lehndorff, R.FZJ* ; Bürgler, D. E.FZJ* ; Buchmeier, M.FZJ* ; Grünberg, P. A.FZJ* ; Schneider, C. M.FZJ* ; van der Hart, A.

2006
American Institute of Physics Melville, NY

Applied physics letters 89, 222511 (2006) [10.1063/1.2398923]

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Please use a persistent id in citations: http://hdl.handle.net/2128/17376 doi:10.1063/1.2398923

Abstract: The authors report on current-induced magnetization switching (CIMS) in single-crystalline nanopillars. Fe(14 nm)/Cr(0.9 nm)/Fe(10 nm)/Ag(6 nm)/Fe(2 nm) multilayers are deposited by molecular-beam epitaxy. The central Fe layer is coupled to the thick one by interlayer exchange coupling over Cr, while the topmost Fe layer is decoupled. Nanopillars with 150 nm diameter are prepared by optical and e-beam lithographies. The opposite spin scattering asymmetries of the Fe/Cr and Fe/Ag interfaces enabled the authors to observe normal and inverse CIMS for the two subsystems, which are combined in a single device. At high magnetic fields, steplike resistance changes are measured at positive currents and are attributed to current-driven magnetic excitations. (c) 2006 American Institute of Physics.

Keyword(s): J

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