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Conductance oscillations in transition metal superlattices

Research output: Contribution to journalLetter


Journal publication date1998
JournalJournal of Physics: Condensed Matter
Number of pages7
Original languageEnglish


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.