Comparison of the use of NiFe and CoFe as electrodes for metallic lateral spin valves. (4th December 2015)

• Record Type: Journal Article
• Authors: Zahnd, G; Vila, L; Pham, T V; Marty, A; Laczkowski, P; Savero Torres, W; Beigné, C; Vergnaud, C; Jamet, M; Attané, J-P
• Is Part Of: Nanotechnology. Volume 27:Number 3(2016)
• Publication Date: 2015-12-04
• Subjects: lateral spin valves -- spintronics -- spin injection -- CoFe; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/0957-4484/27/3/035201
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Spin injection and detection in Co60 Fe40 -based all-metallic lateral spin valves have been studied at both room and low temperatures. The obtained spin signals amplitudes have been compared to those of identical Ni80 Fe20 -based devices. The replacement of Ni80 Fe20 by CoFe allows increasing the spin signal amplitude by up to one order of magnitude, thus reaching 50 mΩ at room temperature. The spin signal dependence with the distance between the ferromagnetic electrodes has been analyzed using both a 1D spin-transport model and finite element method simulations. The enhancement of the spin signal amplitude when using CoFe electrodes can be explained by a higher effective polarization.