Fibonacci-Hubbard Chain at Zero and Finite Temperatures
Strongly Correlated Electrons
2007-05-23 v2
Abstract
We have studied finite-sized single band Hubbard chains with Fibonacci modulation for half filling within a mean field approximation. The ground state properties, together with the dc conductivity both at zero and non-zero temperatures, are calculated for such quasi-periodic Hubbard chains. While a reduction in the conductivity is found for strong electronic interaction or strong Fibonacci modulation, a competition between these two is observed to enhance the conductivity. The results at finite temperatures also illustrate some interesting features of such finite-sized systems.
Cite
@article{arxiv.cond-mat/0212515,
title = {Fibonacci-Hubbard Chain at Zero and Finite Temperatures},
author = {Sanjay Gupta and Shreekantha Sil and Bibhas Bhattacharyya},
journal= {arXiv preprint arXiv:cond-mat/0212515},
year = {2007}
}
Comments
20 pages, Latex, 9 figures (postscript)