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Conductance Oscillations in Zigzag Platinum Chains.

Research output: Contribution to journalJournal article

Published

Article number256804
Journal publication date15/12/2005
JournalPhysical Review Letters
Journal number25
Volume95
Number of pages4
Original languageEnglish

Abstract

Using first principles simulations we perform a detailed study of the structural, electronic, and transport properties of monatomic platinum chains, sandwiched between platinum electrodes. First, we demonstrate that the most stable atomic configuration corresponds to a zigzag arrangement that gradually straightens as the chains are stretched. Second, we find that the averaged conductance shows slight parity oscillations with the number n of atoms in the chain. Additionally, the conductance of chains of fixed n oscillates as the end atoms are pulled apart, due to the gradual closing and opening of conductance channels as the chain straightens.