Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-08-13
Physics
Condensed Matter
Strongly Correlated Electrons
8 pages, 3 figures; submitted to SCES 2010 conference proceedings
Scientific paper
Motivated by experiments on doped transition metal oxides, this paper considers the interplay of interactions, disorder, kinetic energy and temperature in a simple system. An ensemble of two-site Anderson-Hubbard model systems has already been shown to display a zero-bias anomaly which shares features with that found in the two-dimensional Anderson-Hubbard model. Here the temperature dependence of the density of states of this ensemble is examined. In the atomic limit, there is no zero-bias anomaly at zero temperature, but one develops at small nonzero temperatures. With hopping, small temperatures augment the zero-temperature kinetic-energy-driven zero-bias anomaly, while at larger temperatures the anomaly is filled in.
Atkinson W. A.
Wortis Rachel
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