MAGNETORESISTANCE OF N-CUINSE2 IN A METAL LIC SYSTEM

A study of the electrical behaviour of n-CuInSe2 samples with an elect ronic concentration greater than the Mott's critical concentration is made at low temperature in the presence of a magnetic field up to 35 T . The variation of the relative magnetoresistance at a fixed temperatu re, with the weak magnetic field is analyzed in the framework of the m odels taking into account the electron phonon and electron-electron in teractions. The study of the total conductivity, at low temperature an d high fields, shows that the correction term to the electric conducti vity in the metallic regime. fits with the Kaveh and Mott's model.