Spin-dependent transport in molecular tunnel junctions

Details Spin-dependent transport in molecular tunnel junctions Spin-dependent transport in molecular tunnel junctions

2004-04-30

arxiv.org/abs/cond-mat/0404740v1

Phys. Rev. Lett. 93, 136601 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 color figures

Scientific paper

10.1103/PhysRevLett.93.136601

We present measurements of magnetic tunnel junctions made using a self-assembled-monolayer molecular barrier. Ni/octanethiol/Ni samples were fabricated in a nanopore geometry. The devices exhibit significant changes in resistance as the angle between the magnetic moments in the two electrodes is varied, demonstrating that low-energy electrons can traverse the molecular barrier while maintaining spin coherence. An analysis of the voltage and temperature dependence of the data suggests that the spin-coherent transport signals can be degraded by localized states in the molecular barriers.

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