Extreme thermopower anisotropy and interchain transport in the   quasi-one-dimensional metal Li(0.9)Mo(6)O(17)
  Thermopower and electrical resistivity measurements transverse to the conducting chains of the quasi-one-dimensional metal Li(0.9)Mo(6)O(17) are reported in the temperature range 5 K <= T <= 500 K. For T>= 400 K the interchain transport is determined by thermal excitation of charge carriers from a valence band ~ 0.14 eV below the Fermi level, giving rise to a large, p-type thermopower that coincides with a small, n-type thermopower along the chains. This dichotomy -- semiconductor-like in one direction and metallic in a mutually perpendicular direction -- gives rise to substantial transverse thermoelectric (TE) effects and a transverse TE figure of merit among the largest known for a single compound. 
J. L. Cohn, S. Moshfeghyeganeh, C. A. M. dos Santos, and J. J.   Neumeier
cond-mat.mtrl-sci cond-mat.str-el