Kinetic Monte-Carlo simulations of resistive switching in silver doped titanium dioxide thin films

Sven Dirkmann, Jan Trieschmann, Mirko Hansen, Martin Ziegler, Hermann Kohlstedt, Thomas Mussenbrock

DPG-Frühjahrstagung 2015, 15.-20. März 2015, Berlin


Abstract

Low power consumption, low frabrication costs, fast write and read cy- cles, and scalability into the nanometer range make resistive switching devices attractive for future non-volatile memory applications and neu- romorphic circuits. The majority of devices rely on nano-ionic mecha- nisms – one of which is electrochemical metallization, where the change in resistance is due to the formation and re-formation of conducting filaments. This contribution is devoted to demonstrate and discuss the formation and re-formation of Ag filaments in an Ag/TiO2 /Pt sandwich-like thin film system at experimental time-scales by means of kinetic Monte-Carlo simulations. It is shown that filamentary elec- trochemical metalization devices provide distinct and reliable “on” and “off” states, but their dynamic range is limited. (The work is supported by the German Research Foundation in the frame of FOR 2093.)

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