Shape effect of resistance and thermoelectric power for BiSb in a magnetic field

Abstract

The measurement of the Seebeck coefficient and resistivity was performed for a direction of the axis of the single crystal of bismuth-antimony in a magnetic field. The magnetic field effects were observed experimentally. We calculated the shape effects on the sample of the magnetic field using a two-dimensional computer code; effects studied included the Hall effect, thermoelectric effect, Nernst effect, and the Leduc-Righi effect. Considering phenomenological equations, we compared experimental results utilizing single crystal bismuth-antimony and calculations. The results are in good agreement between 0 and 4 Tesla. It is thus shown both by experiment and calculation that the electrode shape of the thermoelectric element causes variation in the Seebeck coefficient and resistivity.