Effective modulation of spin accumulation using a ferromagnetic/nonmagnetic bilayer spin channel. (18th November 2021)

• Record Type: Journal Article
• Authors: Ariki, Taisei; Nomura, Tatsuya; Ohnishi, Kohei; Kimura, Takashi
• Is Part Of: Journal of physics. Volume 55:Number 9(2022)
• Publication Date: 2021-11-18
• Subjects: spin injection -- transverse spin current -- bilayer spin channel; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/ac34aa
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: A lateral spin valve consisting of highly spin-polarized CoFeAl electrodes with a CoFeAl/Cu bilayer spin channel has been developed. Despite a large spin absorption into the CoFeAl capping channel layer, an efficient spin injection and detection using the CoFeAl electrodes enable us to observe a clear spin valve signal. We demonstrate that the nonlocal spin accumulation signal is significantly modulated depending on the relative angle of the magnetizations between the spin injector and absorber. The observed modulation phenomena is explained by the longitudinal and transverse spin absorption effects into the CoFeAl channel layer with the spin resistance model.