2014/04/30 by Kapildeb Dolui, Awadhesh Narayan, Ivan Rungger +1 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Ab initio #Colossal magnetoresistance #Condensed matter physics #Coupling (piping) #Ferroelectric and Negative Capacitance Devices #Giant magnetoresistance #Magnetic field #Magnetoresistance #Materials science #Metal #Metallurgy #Molecular Junctions and Nanostructures #Physics #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #Thermodynamics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.90.041401
published as Phys. Rev. B 90, 041401(R) (2014) · Updated text, published version
openalex publication_date 2014/07/02 · arxiv created 2014/07/15 · arxiv updated 2014/07/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We demonstrate giant magnetoresistance in Fe/MoS2/Fe junctions by means of ab initio transport calculations. We show that junctions incorporating either a monolayer or a bilayer of MoS2 are metallic and that Fe acts as an efficient spin injector into MoS2 with an efficiency of about 45%. This is the result of the strong coupling between the Fe and S atoms at the interface. For junctions of greater thickness, a maximum magnetoresistance of \ensuremath∼300% is obtained, which remains robust with the applied bias as long as transport is in the tunneling limit. A general recipe for improving the magnetoresistance in spin valves incorporating layered transition metal dichalcogenides is proposed.