CrXY (X, Y = S, Se) nanoribbons of the zigzag type (zCrXYNRs)
are
investigated as candidates for applications in nanospintronics. Density
functional theory (DFT) in conjunction with a nonequilibrium Green’s
function (NEGF) approach is used to model the magnetoresistance and
spin-filtering properties of zCrS2NRs with five CrS2 rows (5-zCrS2NRs) as a function of longitudinal
strain as well as vertical and lateral gate fields for ferromagnetic
(FM) and antiferromagnetic (AFM) phases of the ribbon. In the bias
regime V < 10 mV, magnetoresistance ratios up
107% were obtained, and half-metallicity was established
for the magnetic ground state of 5-zCrS2NR (AFM), associated
with magnetocurrent ratios of 100%. Applying lateral gate fields to
the ribbon turned out to be a way of controlling the sign of the net
spin population emerging from 5-zCrS2NR. Comparison is
made with ribbons of the form 5-zCrSe2NRs and the Janus
ribbon 5-zCrSeSNRs. The latter displays electronic and spin-resolved
transport properties analogous to 5-zCrS2NR at 5% strain
level and is therefore interpreted in terms of a zCrS2 ribbon
with longitudinal strain.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.