Abstract
We demonstrate giant magnetoresistance in junctions by means of ab initio transport calculations. We show that junctions incorporating either a monolayer or a bilayer of are metallic and that Fe acts as an efficient spin injector into 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 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.
- Received 14 April 2014
- Revised 21 June 2014
DOI:https://doi.org/10.1103/PhysRevB.90.041401
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