Conductance Oscillations in Transition Metal Superlattices

Details Conductance Oscillations in Transition Metal Superlattices Conductance Oscillations in Transition Metal Superlattices

1998-04-16

arxiv.org/abs/cond-mat/9804177v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1088/0953-8984/10/42/002

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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