Thermoelectric Power of Glassy Carbon

Abstract

Analysis has been carried out for the temperature dependence of thermoelectric power (S) of glassy carbon heat-treated between 1200 and 2700°C measured by Kaburagi et al. The thermoelectric power can be written in the temperature range from 1.5 to 280K
S=aT+bT^1/2+S_B,
where the first term is due to metallic-like conduction, the second term is attributed to variable range hopping, and the third term is a peaked function of temperature with a peak at about 23 K.