We investigate transresistance effects in electron-hole double layer systems with an excitonic condensate. Our theory is based on the use of a minimum dissipation premise to fix the current carried by the condensate. We find that the drag resistance jumps discontinuously at the condensation temperature and diverges as the temperature approaches zero.
@article{arxiv.cond-mat/9510043,
title = {Drag in paired electron-hole layers},
author = {Giovanni Vignale and A. H. MacDonald},
journal= {arXiv preprint arXiv:cond-mat/9510043},
year = {2009}
}