Abstract
In this letter, we propose a new method to improve resistive switching properties in ZrO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -based conductive-bridge resistive memory devices by introducing a thin AlN layer with high thermal conductivity between the ZrO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layer and TiN bottom electrode. Compared with the Cu/TiW/ZrO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /TiN single-layer device, the Cu/TiW/ZrO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /AlN/TiN bilayer device exhibits lower operation voltages, higher endurance performance, and higher resistive switching uniformity. These substantial improvements in the resistive switching properties are attributed to the formation and rupture of conductive filament that can be effectively controlled in the device after inserting the AlN layer.
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