Abstract
Near InfraRed (NIR) photon emission is observed from filaments in HfO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Resistive Random Access Memories (ReRAMs). This technique is non-destructive and offers rapid localization of filaments, enabling statistical analysis of their spatial distribution. We show that the emission is electric-field driven. We also report direct experimental evidence of i) completely random spatial distribution of filaments across multiple devices and ii) formation of multiple filaments inside a single large device.
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