Low-temperature normal-state transport and large thermoelectric power factor in the quasi-1D superconductor Nb₃S₄

We report low-temperature (4 K ≤ T ≤ 300 K) transport measurements (resistivity, thermopower, thermal conductivity) on single crystals of the quasi-one-dimensional metal Nb₃S₄ along its most conducting axis. A superconductor^a near 4K, its transport properties have not been widely investigated.^b We compare our measurements to prior work and take note of a thermoelectric power factor in the range 35-60 K that is among the largest for any material in this temperature range, ≈125 μW/cm².

^a E. Amberger et al., Sol. St. Commun. 26, 943 (1978).

b Y. Ishihara and I. Nakada, Sol. St. Commun. 42, 579 (1982); Y. Ishihara et al., Sol. St. Commun. 50, 657 (1984).