d-density wave state in an external magnetic field
arXiv:cond-mat/0304574 · doi:10.1016/j.physc.2004.03.018
Abstract
We present a study of the electrical and thermal conductivities of the $d$-density wave (DDW) state in an external magnetic field $B$ in the low temperature regime and in the presence of impurities. We show that in the zero temperature limit, $T \to 0$, the Wiedemann-Franz (WF) law remains intact. For finite $T$ the WF law violation is possible and it is enhanced by the external field.
2 pages, 1 figure, submitted to M2S-Rio 2003 Proceedings