{Spin polarization tuning in Mn${}_x$Fe${}_{1-x}$Ge${}_3$

Abstract

Experimentally, the intermetallic compound Mn${}_4$FeGe${}_3$ has been recently shown to exhibit enhanced magnetic properties and spin polarization compared to the Mn${}_5$Ge${}_3$ parent compound. The present {\em ab-initio} study focusses on the effect of Fe substitution on the electronic and magnetic properties of the compound. Our calculations reveal that the changes on the Fermi surface of the doped compound are remarkable and provide explanations for the enhanced spin-polarization observed. Finally, we show that it is indeed possible to tune the degree of spin-polarization upon Fe doping, thus making the Mn${}_{1-x}$Fe${}_x$Ge${}_3$ intermetallic alloy very promising for future spintronic applications.

8 pages, 1 fig

References in corpus (4)

• How to calculate the degree of spin polarization in ferromagnets?
• First-principles characterization of ferromagnetic Mn5Ge3 for spintronic applications
• Non-collinear Magnetic states of Mn5Ge3 compound
• Calculations of spin induced transport in ferromagnets

Cited by in corpus (3)

• Revisiting the Mn-doped Ge using the Heyd-Scuseria-Ernzerhof hybrid functional
• Magnetotransport in ferromagnetic Mn5Ge3, Mn5Ge3C0.8, and Mn5Si3C0.8 thin films
• Absence of halfmetallicity in defect-free Cr, Mn-delta-doped Digital Magnetic Heterostructures