Es. Choi et al., Thermoelectric power of anisotropic electron system in quasi-one-dimensional organic conductors, SYNTH METAL, 120(1-3), 2001, pp. 1069-1070
We investigate thermoelectric power of Bechgaard salts. Metallic state can
clearly be divided into two regions where the linearly temperature dependen
t thermoelectric power along the most conducting direction has distinct slo
pes. Thermoelectric power along the second and the least conducting directi
on has a broad maximum between 50 and 150K depending on the direction or co
mpounds, which is contradictory to the old investigation in early eighties.
Our results suggest that the high temperature metallic state is highly one
dimensional with b- and c- axis transport being only diffusive. We also su
ggest that thermoelectric power measurement could be used to estimate the d
imerization gap which resides on the most of the quasi-one-dimensional elec
tron system.