Large transverse thermoelectric effects in single crystals of the quasi-one-dimensional metal Li$_{0.9}$Mo$_6$O$_{17}$

We present measurements of transverse thermoelectric (TE) effects in the temperature range 300-500 K for single crystals of the quasi-one-dimensional (q1D) metal Li$_{0.9}$Mo$_6$O$_{17}$ (lithium purple bronze). Prior work demonstrates a highly anisotropic Seebeck coefficient (S), with metallic $n$-type behavior along the q1D chains (crystallographic \emph{b} axis), $p$-type semiconductor behavior in the perpendicular, inter-chain direction (\emph{c} axis), and a difference $\Delta S\simeq 200 \mu$V/K near $T=450$~K. Significant transverse TE voltages, induced by applied temperature differences, and Peltier cooling, induced by applied currents, in specimens with body axes misaligned with the \emph{b} and \emph{c} axes will be discussed.