Strongly-Correlated Thermoelectric Transport beyond Linear Response
Abstract
We investigate nonlinear thermoelectric transport through quantum impurity systems with strong on-site interactions. We show that the steady-state transport through interacting quantum impurities in contact with electron reservoirs at significantly different temperatures can be captured by an effective-equilibrium density matrix, expressed compactly in terms of the Lippmann-Schwinger operators of the system. In addition, the reservoirs can be maintained at arbitrary chemical potentials. The interplay between the temperature gradient and bias voltage gives rise to a non-trivial breaking of particle-hole symmetry in the strongly correlated regime, manifest in the Abrikosov-Suhl localized electron resonance. This purely many-body effect, which is in agreement with experimental results, is beyond the purview of mean-field arguments.
Cite
@article{arxiv.1306.0840,
title = {Strongly-Correlated Thermoelectric Transport beyond Linear Response},
author = {Prasenjit Dutt and Karyn Le Hur},
journal= {arXiv preprint arXiv:1306.0840},
year = {2014}
}
Comments
19 pages (7 pages main text and the rest Appendices. Additional references added and minor typos corrected)