12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Conductance oscillations in transition metal su...
View graph of relations

« Back

Conductance oscillations in transition metal superlattices

Research output: Contribution to journalLetter

Published

Journal publication date1998
JournalJournal of Physics: Condensed Matter
Journal number42
Volume10
Number of pages7
PagesL691-L697
Original languageEnglish

Abstract

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.