Regensburg 2016 – scientific programme

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DS: Fachverband Dünne Schichten

DS 12: Postersession DS

DS 12.49: Poster

Monday, March 7, 2016, 17:00–19:00, Poster A

Molecular Dynamics Approach to Resistive Switching in Thin Film Systems — •Tobias Gergs, Sven Dirkmann, Frederik Schmidt, and Thomas Mussenbrock — Ruhr University Bochum, 44780 Bochum

Resistive switching devices have recently experienced a revival, leading to a remarkable enhancement of the scientific interest due to a wide range of potential applications including non-volatile memories and neural networks. Most of these devices rely on ionic conduction mechanisms. Here the change in resistance is due to the formation and dissolution of electrically conducting paths in solid state electrolytes. This phenomenon is also referred to as electrochemical metallization or metallic bridging. It has recently been shown that kinetic Monte Carlo simulations are capable of mimicking the long time scale dynamics of such devices by imposing potential structures as well as activation energies for the chemical processes. This contribution is devoted to study the short time scale dynamics of a generic Cu/a-SiO₂/Cu tri-layer thin film system and its fundamental properties by means of molecular dynamics simulations. Particularly, the influence of an externally applied electric field on the interfacial molecular configuration is discussed. (The work is supported by the German Research Foundation in the frame of FOR 2093.)