Deviation of IR radiation in n-InSb at the thermal-electric instability in a magnetic field

The paper deals with a process of S-shaped current voltage characteristic VC) formation, on heating an electronic indium antimonide sample by means of direct electric current in the presence of external stationary magnetic field. While analysing the current-voltage characteristic of the sample, the temperature dependence of the forbidden zone width, charge carrier concentration, mobility and heat transfer are taken into account. The concentration spatial distribution over the sample cross section, obtained as a result of heat transfer equation integration, is used for the analysis of IR radiation angle of deflection in indium antimonide. Experimental and theoretical investigations of current dependence of the deflection angle with respect to the order of magnitude correspond to each other and indicate the possibility of utilizing temperature instability while designing IR radiation laser deflectors