Temperature dependence of optical spectral weights in quarter-filled ladder systems
Strongly Correlated Electrons
2009-11-07 v1
Abstract
The temperature dependence of the integrated optical conductivity I(T) reflects the changes of the kinetic energy as spin and charge correlations develop. It provides a unique way to explore experimentally the kinetic properties of strongly correlated systems. We calculated I(T) in the frame of a t-J-V model at quarter-filling for ladder systems, like NaV_2O_5, and show that the measured strong T dependence of I(T) for NaV_2O_5 can be explained by the destruction of short range antiferromagnetic correlations. Thus I(T) provides detailed information about super-exchange and magnetic energy scales.
Keywords
Cite
@article{arxiv.cond-mat/0108465,
title = {Temperature dependence of optical spectral weights in quarter-filled ladder systems},
author = {Markus Aichhorn and Peter Horsch and Wolfgang von der Linden and Mario Cuoco},
journal= {arXiv preprint arXiv:cond-mat/0108465},
year = {2009}
}
Comments
4 pages, 5 figures