Set/Reset Switching Model of Cu Atom Switch Based on Electrolysis

A set/reset switching model of Cu atom switch based on electrolysis is newly proposed. A nanometer-thick solid electrolyte gives a high electric field of ~3.3 MV/cm in the solid electrolyte at 2 V, enabling an ionization of Cu and a formation of Cu bridge. It is revealed that the switching voltage depends on the resistance of electrolyte, where the modified Faraday's law of electrolysis with exponential factors on current and time well falls on the experimental on-resistance. The proposed simple compact model is useful for estimating the resistance of the Cu atom switch programmed by any conditions.