Abstract

Oxide Electronics Resistive switching is a process in which the electrical resistance of a sample changes abruptly in response to a voltage pulse, often by orders of magnitude. This process is at the heart of many neuromorphic computing approaches but visualizing it in both space and time is tricky. del Valle et al. monitored the resistive switching in three different vanadium oxide compounds by measuring time- and space-resolved optical reflectivity (see the Perspective by Hilgenkamp and Gao). A characteristic conducting filament was quickly nucleated on the inhomogeneities in the sample and then propagated due to Joule heating. Science , abd9088, this issue p. [907][1]; see also abh2231, p. [854][2] [1]: /lookup/doi/10.1126/science.abd9088 [2]: /lookup/doi/10.1126/science.abh2231

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