Creating currents of electric bubbles

Jorge Íñiguez-González; Hugo Aramberri

doi:10.1103/fb55-3fks

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arXiv · 2412.15074

Creating currents of electric bubbles

Jorge Íñiguez-González·Hugo Aramberri

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Abstract

The experimental demonstration of electric skyrmion bubbles and the recent prediction of their Brownian motion have brought topological ferroelectrics close to their magnetic counterparts. Electric bubbles (e-bubbles) could potentially be leveraged in applications for which magnetic skyrmions have been proposed (e.g., neuromorphic computing). Yet, we still lack a strategy to create currents of e-bubbles. Here, using predictive atomistic simulations, we illustrate two approaches to induce e-bubble currents by application of suitable electric fields, static or dynamic. We focus on regimes where e-bubbles display spontaneous diffusion, which allows us to generate a current by simply biasing their Brownian motion. Our calculations indicate that e-bubble velocities over 25 m/s can be achieved at room temperature, suggesting that these electric quasiparticles could rival the speeds of magnetic skyrmions upon further optimization.

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Jorge Íñiguez-González, Hugo Aramberri. 2024-12-19. Creating currents of electric bubbles. https://doi.org/10.1103/fb55-3fks

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