Very recently large Nernst effect and Seebeck effect were observed above the superconducting transition temperature 2.3K in a heavy fermion superconductor CeCoIn_5. We shall interpret this large Nernst effect in terms of unconventional density wave (UDW), which appears around T=18K. Also the temperature dependence of the Seebeck coefficient below T=18K is described in terms of UDW. Another hallmark for UDW is the angular dependent magnetoresistance, which should be readily accessible experimentally.
@article{arxiv.cond-mat/0408351,
title = {Unconventional density wave in CeCoIn_5?},
author = {Balázs Dóra and Kazumi Maki and Attila Virosztek and András Ványolos},
journal= {arXiv preprint arXiv:cond-mat/0408351},
year = {2009}
}