We show that when non-unitary noise effects are taken into account the thermopower is in general asymmetric under magnetic field reversal, even for non-interacting systems. Our findings are illustrated in the example of a three-dot ring structure pierced by an Aharonov-Bohm flux.
@article{arxiv.1107.1431,
title = {Thermopower with broken time-reversal symmetry},
author = {Keiji Saito and Giuliano Benenti and Giulio Casati and Tomaz Prosen},
journal= {arXiv preprint arXiv:1107.1431},
year = {2011}
}