Thermoelectric effects in the field-suppressed superconducting state of quasi-one-dimensional Li$_{0.9}$Mo$_6$O$_{17}$

We present resistivity, thermopower ($S$), and Nernst ($\nu$) measurements in the range $0.4~K\leq T\leq 20$~K on single crystals of the quasi-one-dimensional (q1D) metal, Li$_{0.9}$Mo$_6$O$_{17}$ (LiPB) along the q1D metallic chains. The low-$T$ limits of $S/T$ and $\nu/T$, determined in the magnetic-field suppressed superconducting state ($T_c=2$~K), indicate a very small Fermi temperature ($T_F\sim 30$~K), contrary to expectations from prior work including photoemission. Possible insights from these results into the nature of the mysterious density-wave order\footnote{C. A. M. dos Santos {\it et al.}, Phys. Rev. Lett. {\bf 98}, 266405 (2007).}$^,$\footnote{X. Xu \emph{et al.}, Phys. Rev. Lett. {\bf 102}, 206602 (2009).} responsible for the upturn in resistivity below $\sim 25$~K will be discussed.