Attilio Belmonte

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The basic unit of information in filamentary-based resistive switching memories is physically stored in a conductive filament. Therefore, the overall performance of the device is indissolubly related to the properties of such filament. In this Letter, we report for the first time on the three-dimensional (3D) observation of the shape of the conductive(More)
In this paper we review a dynamic device model for filamentary RRAM in HfO-based dielectrics. We summarize its transient modeling features and its statistical properties. The model explains with satisfactory quantitative resolution all main features of the RRAM switching, not just the voltage, time and temperature dependence, but also statistical(More)
In the recent past, filamentary-based resistive switching devices have emerged as predominant candidates for future non-volatile memory storage. Most of the striking characteristics of these devices are still limited by the high power consumption and poor understanding of the intimate resistive switching mechanism. In this study, we present an atomic scale(More)
We report the improved thermal stability of carbon alloyed Cu0.6Te0.4 for resistive memory applications. Copper-tellurium-based memory cells show enhanced switching behavior, but the complex sequence of phase transformations upon annealing is disadvantageous for integration in a device. We show that addition of about 40 at % carbon to the Cu-telluride layer(More)
The formation and rupture of conductive filaments (CFs) inside an insulating medium is used as hardware encoding of the state of a memory cell ("1" - "0") in filamentary-based conductive bridging memories. Currently accepted models explain the filament erase (reset) as the subtraction of conductive metal atoms from the CF; however, they do not fully account(More)
The electrochemical reactions triggering resistive switching in conductive-bridge resistive random access memory (CBRAM) are spatially confined in few tens of nm(3). The formation and dissolution of nanoscopic Cu-filaments rely on the displacement of ions in such confined volume, and it is driven by the electric field induced ion migration and nanoscaled(More)
A classical problem in fluid mechanics is that of a jet impinging on a solid surface. During the 1960’s, partly driven by applications in the steel industry, the exploration of this field of study shifted towards the interaction between a gas jet and a deformable liquid surface (Figure 1), where often the shape of the deformation and its relation to the(More)
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