Electrically-manipulable spin filter based on a novel magnetic nanostructure. (3rd March 2016)

• Record Type: Journal Article
• Authors: Liu, Xu-Hui; Gong, Yan-Jun; Li, Xiao-Wu
• Is Part Of: Philosophical magazine letters. Volume 96:Number 3(2016)
• Page Start: 112
• Page End: 120
• Publication Date: 2016-03-03
• Subjects: Magnetic nanostructure -- transverse electrical field -- spin polarization -- spin filter; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2016.1158426
• Languages: English
• ISSNs: 0950-0839

Abstract

Abstract: In order to achieve a controllable spin-polarized source, we have applied a transverse electric field to a spin filter based on a novel magnetic nanostructure with zero average magnetic field. We have analytically calculated the transmission coefficient, conductance and spin polarization for electrons to transit the device in the presence of a transverse electric field. The results demonstrate that the transmission, the conductance and the spin polarization vary sensitively with the electric field. It is shown that the performance of the spin filter can be manipulated expediently by adjusting the transverse electric field. Thus, the spin filter can be utilized as an electrically controllable spin-polarized source for spintronics applications.