Length-dependent oscillations of the conductance through atomic chains: The importance of electronic correlations

We calculate the conductance of atomic chains as a function of their length. Using the Density Matrix Renormalization Group algorithm for a many-body model which takes into account electron-electron interactions and the shape of the contacts between the chain and the leads, we show that length-depen...

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Bibliographic Details
Published inEurophysics letters Vol. 67; no. 1; pp. 96 - 102
Main Authors Molina, R. A, Weinmann, D, Pichard, J.-L
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.07.2004
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Summary:We calculate the conductance of atomic chains as a function of their length. Using the Density Matrix Renormalization Group algorithm for a many-body model which takes into account electron-electron interactions and the shape of the contacts between the chain and the leads, we show that length-dependent oscillations of the conductance whose period depends on the electron density in the chain can result from electron-electron scattering alone. The amplitude of these oscillations can increase with the length of the chain, in contrast to the result from approaches which neglect the interactions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0295-5075
1286-4854
DOI:10.1209/epl/i2004-10045-5