Spin transport in spin filtering magnetic tunneling junctions.
Taking into account spin-orbit coupling and s-d interaction, we investigate spin transport properties of the magnetic tunneling junctions with spin filtering barrier using Landauer-Büttiker formalism implemented with the recursive algorithm to calculate the real-space Green function. We predict completely different bias dependence of negative tunnel magnetoresistance (TMR) between the systems composed of nonmagnetic electrode (NM)/ferromagnetic barrier (FB)/ferromagnet (FM) and NM/FB/FM/NM spin filtering tunnel junctions (SFTJs). Analyses of the results provide us possible ways of designing the systems which modulate the TMR in the negative magnetoresistance regime.
Li
Yun
Y
Department of Materials Science and Engineering, Yunnan University, Kunming 650091, China.
Lee
Eok Kyun
EK
D003198:Computer Simulation; D004579:Electron Transport; D008280:Magnetics; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D012666:Semiconductors; D013113:Spin Labels
D013113:Spin Labels