Dynamics of the electrically induced insulator-to-metal transition in rare-earth nickelates
Javier del Valle, Rodolfo Rocco, Claribel Domínguez, Jennifer Fowlie, Stefano Gariglio, M. J. Rozenberg, Jean‐Marc Triscone
Abstract
Rare-earth nickelates feature an insulator-to-metal transition (IMT) that can be electrically triggered. We study the dynamics of this electrically induced transition by comparing the time-dependent transport properties of two distinct members of the ${Re\mathrm{NiO}}_{3}$ family: ${\mathrm{NdNiO}}_{3}$ and ${\mathrm{SmNiO}}_{3}$. We report stark differences in the nucleation and growth of the metallic phase, which evolve more rapidly for ${\mathrm{NdNiO}}_{3}$. With the aid of simulations, we identify the amplitude of the resistivity change across the IMT as the key parameter controlling the switching speed. Our results are in accordance with recent experiments in the ${\mathrm{VO}}_{x}$ family, contributing to a unified vision of the field-induced IMT dynamics across different families of correlated oxides.