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

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

2004-02-11

arxiv.org/abs/cond-mat/0402307v1

Europhys. Lett. 67, 96-102 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 4 figures

Scientific paper

10.1209/epl/i2004-10045-5

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.

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