Hole assisted Gunn oscillation mechanism is proposed to explain the current oscillation in dumbbell shaped single crystal Ge. It is shown that the presence of equal amount of electrons and holes and the dumbbell shape jointly create the space charge and field fluctuation which, in turn, produces the Gunn oscillation. Experimental observations are discussed in the light of the proposed model.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.