Creating Currents of Electric Bubble Quasiparticles

In this talk I will describe our theoretical predictions on how to create currents of electric bubbles, by using suitable electric fields modulated in time and/or space. Most of the results will pertain to regimes in which these quasiparticles present Brownian motion [1], where a current can be crated by simply biasing their spontaneous diffusion. I will show that the results from the atomistic simulations are compatible with the usual drift-diffusion model of Brownian particles under a constant force. Our calculations suggest it is possible to drive bubbles at velocities of the order of 100 m/s, comparable to the fastest speeds achieved for magnetic skyrmions. If time permits, I will also provide a brief perspective of the field, commenting on the possible application of these objects in Unconventional Computing.

Work done in collaboration with Hugo Aramberri (Luxembourg Institute of Science and Technolgoy). Work funded by the Luxembourg National Research Fund through Grants C21/MS/15799044/FERRODYNAMICS and INTER/ANR/24/18960894/TOPOTHERM.

[1] Brownian electric bubble quasiparticles, H. Aramberri and J. Íñiguez-González, Phys. Rev. Lett. 132, 136801 (2024).