Lengthdependent oscillations of the conductance through atomic chains: The importance of electronic correlations
Abstract
We calculate the conductance of atomic chains as a function of their length. Using the Density Matrix Renormalization Group algorithm for a manybody model which takes into account electronelectron interactions and the shape of the contacts between the chain and the leads, we show that lengthdependent oscillations of the conductance whose period depends on the electron density in the chain can result from electronelectron 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.
 Publication:

EPL (Europhysics Letters)
 Pub Date:
 July 2004
 DOI:
 10.1209/epl/i2004100455
 arXiv:
 arXiv:condmat/0402307
 Bibcode:
 2004EL.....67...96M
 Keywords:

 Condensed Matter  Mesoscopic Systems and Quantum Hall Effect;
 Condensed Matter  Strongly Correlated Electrons
 EPrint:
 7 pages, 4 figures