Polaron Mobility at Finite Temperature (Weak Coupling Limit)

抄録

On the basis of the Feynman model for polarons, the drift mobility of an electron in a polar crystal is studied for the weak coupling limit of the electron-phonon interaction. The expression for the polaron mobility at the low temperature limit, which was previously obtained by the author, is extended to the case of the finite temperature. The analysis of the experiments with AgCl and AgBr showed that the expression thus obtained gives a smaller band mass than other methods of analysis of the drift mobility (Van Heyningen and Garcia-Moliner) do.