SIZE DEPENDENCE OF THERMOVOLTAGE

Thermovoltage in semiconductor thin layers and films is theoretically studied. Mn any-valley u-Si type semiconductors with sample thicknesse s, of the order of the electron cooling length and/or intervalley rela xation length, are considered. The size of feet of thermovoltage is sh own to occur for the above thickness values even without magnetic fiel d. Due to the size effect not only the longitudinal voltage but also t rasverse one can arise; its value highly depends on orientation of the crystal axes.