Oral presentation

Session Information

Location: Moinoterra Winery
Day: 4. Saturday 19th
Time: 11:30-12:00
Chairperson: to be announced…

Presentation Details

Presentation Type: Oral presentation
Title: Emerging Applications of Magnetic Topological Textures
Abstract: Magnetic topological solitons are nanoscale spin textures distinguished by their enhanced stability, rich dynamics, and multiple controllable degrees of freedom. Information can be encoded in their position or internal state, electrically detected, and manipulated using currents, voltage gates, magnetic fields, temperature gradients, surface acoustic waves, magnons, and optical pulses. This combination of stability, controllability, and multifunctionality makes domain walls, skyrmions, and vortices promising building blocks for emerging applications in computing, communications, and sensing [1].
This talk will present approaches that exploit both the translational and internal degrees of freedom of topological textures. The controlled motion of domain walls and skyrmions enables token-based computation, in which information is represented by the presence and position of individual textures. This framework supports nonvolatile memory and logic operations. Their thermally driven diffusion provides an additional resource for Brownian and probabilistic computing. By engineering the energy landscape experienced by diffusive skyrmions, it becomes possible to implement invertible logic operations and emulate probabilistic functions such as softmax [2].
The internal dynamics of topological textures offer complementary functionalities. Coupled skyrmions and vortices can transform low-dimensional inputs into complex dynamical responses suitable for reservoir computing [3]. Their nonlinear excitation spectra can also support frequency multiplication for communication systems [4]. Furthermore, the sensitivity of their resonant modes to temperature and other external perturbations provides a basis for nanoscale sensing [5].
Together, these examples illustrate how the position, thermal motion, internal modes, and nonlinear dynamics of topological textures can be translated into distinct computational and sensing functions. They establish magnetic solitons as versatile physical primitives for compact, nonvolatile, and energy-efficient technologies.

[1] Rodrigues, D., et al. "Skyrmions in Nanotechnology." IEEE Nanotechnology Magazine (2025).
[2] Winkler, T., et al. “Multi-value probabilistic computing with current-controlled skyrmion diffusion”, arXiv preprint arXiv:2508.19623 (2025)
[3] Hamadeh, A.A., et al. “Diverse dynamics in interacting vortices systems through tunable conservative and non-conservative coupling strengths”, Communications Physics (2025)
[4] Rodrigues, D., et al. “Nonlinear dynamics of topological ferromagnetic textures for frequency multiplication”, Phys. Rev. Applied (2021)
[5] Lianeris, M., et al. “Spintronic temperature nanosensor based on the resonance response of a skyrmion-hosting magnetic tunnel junction”, IEEE Sensors (2025)

Presenter

Dr Davi Rodrigues
Politecnico di Bari | Italy

Authors

1. Rodrigues, Davi | Politecnico di Bari, Bari, Italy