Using density functional theory and the Bardeen, Tersoff, and Hamann formalism we have calculated spin-polarized electron transport in a system involving a nonbonded magnetic probe tip and a self-assembled monolayer (SAM) of benzene-1,4-dithiol on a Ni(111) substrate. A significantly higher tunneling current is obtained for a configuration in which the spin of the probe tip is aligned parallel to that of the substrate than for a configuration with antiparallel alignment—an effect prerequisite for an organic spin switch.
Physical Review B
Karna, S. P.
Spin-polarized electron transport of a self-assembled organic monolayer on a Ni(111) substrate: An organic spin switch.
Physical Review B,
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