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Conductance Oscillations in Transition Metal Superlattices

S. Sanvito·C. J. Lambert·J. H. Jefferson·A. M. Bratkovsky
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Abstract

We present a numerical study of conductance oscillations of transition metal multilayers as a function of layer thickness. Using a material-specific tight-binding model, we show that for disorder-free layers with random thicknesses but clean interfaces, long-period oscillations in the conductance can occur, which are reminiscent of those found in structures exhibiting GMR. Using a heuristic effective mass model, we argue that these oscillations arise from beating between the Fermi wavevector and a class of wavevectors characteristic of the superlattice structure.

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S. Sanvito, C. J. Lambert, J. H. Jefferson, A. M. Bratkovsky. 1998-04-16. Conductance Oscillations in Transition Metal Superlattices. https://doi.org/10.1088/0953-8984%2F10%2F42%2F002

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