Four-atom period in the conductance of monatomic al wires

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We present first-principles calculations based on density functional theory for the conductance of monatomic Al wires between Al(111) electrodes. In contrast to the even-odd oscillations observed in other metallic wires, the conductance of the Al wires is found to oscillate with a period of four atoms as the length of the wire is varied. Although local charge neutrality can account for the observed period, it leads to an incorrect phase. We explain the conductance behavior using a resonant transport model based on the electronic structure of the infinite wire.
Original languageEnglish
JournalPhysical Review Letters
Issue number14
Pages (from-to)146801
Publication statusPublished - 2003

Bibliographical note

Copyright (2003) American Physical Society.



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