Journal
PHYSICAL REVIEW B
Volume 73, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.73.180402
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A systematic, quantitative study of the effect of interface roughness and disorder on the magnetoresistance of FeCo parallel to vacuum parallel to FeCo magnetic tunnel junctions is presented based upon parameter-free electronic structure calculations. Surface roughness is found to have a very strong effect on the spin-polarized transport while that of disorder in the leads (leads consisting of a substitutional alloy) is weaker but still sufficient to suppress the huge tunneling magnetoresistance (TMR) predicted for ideal systems.
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