OBSERVATION OF MICROWAVE REPOPULATION MODULATION IN n-Si AT 77 °K

Abstract
The microwave (9.61 GHz, dielectric constant of n‐Si was measured as a function of crystallographic orientation and as a function of applied dc electric field (warm electron conditions) at 77 °K lattice temperature. The dielectric constant was found to be anisotropic. An analysis of the results correlated with the observed free carrier repopulation shows a new contribution to the microwave properties. This contribution arises from a repopulation modulation at the microwave frequency.