2006/03/24 by H. Dassow, R. Lehndorff, Dassow, H. +15
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Heusler alloys: electronic and magnetic properties #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0603662
arxiv created 2006/03/24 · openalex publication_date 2006/03/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We 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. The topmost Fe layer is decoupled (free layer). Nanopillars with 150 nm diameter are prepared by optical and e-beam lithography. The opposite spin scattering asymmetries of Fe/Cr and Fe/Ag interfaces enable us to observe CIMS at small magnetic fields and opposite current polarity in a single device. At high magnetic fields, step-like resistance changes are measured at positive currents and are attributed to current-driven magnetic excitations.