Conductance oscillations in transition metal superlattices

Sanvito, S and Lambert, C J and Jefferson, J H and Bratkovsky, A M (1998) Conductance oscillations in transition metal superlattices. Journal of Physics: Condensed Matter, 10 (42). L691-L697. ISSN 0953-8984

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We present a numerical study of conductance oscillations of transition metal multilayers as a function of layer thickness. Using a realistic 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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Journal of Physics: Condensed Matter
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24 Oct 2012 14:22
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21 Nov 2022 22:52