# Seebeck effect and potential difference

In seebeck whether electron moving from hotter to colder region creates potential or the heat itself cause atoms to be charged at an end? If without potential can a electron move from hot to cold end?

This tendency of electrons to drift from a hot to a cold end corresponds to an electric "push" from the hot to the cold end; in other words, it corresponds to a potential difference, usually called the Seebeck voltage $V_s$:
$$V_s=S\Delta T$$
$\Delta T$ is the temperature difference and $S$ the Seebeck coefficient, a material property that indicates how well a material produces the Seebeck effect.