International Business Machines Corporation
FinFET 2T2R RRAM

Abstract:

A first fin field effect transistor (FinFET) has an internal source/drain (S/D) with a facetted face that is connected to a dielectric side of a first RRAM. A second FinFET and RRAM structure are also disclosed. In some embodiments, an electrode contact side of each RRAM is connected in common to form a 2T2R device. The locations of one or more electrode points on the diamond-shaped, facetted surface of the bottom electrode accurately position electric fields through the dielectric to accurately and repeatably locate where the filaments/current paths are formed (or reset) through the RRAM dielectric. Material selection and accurate thickness of the RRAM dielectric determine the voltage at which the filaments/current paths are formed (or reset).