d-density wave state in an external magnetic field

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.

arXiv comment2 pages, 1 figure, submitted to M2S-Rio 2003 Proceedings

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