Issue 18, 2023

Survival of skyrmions along granular racetracks at room temperature

Abstract

Skyrmions can be envisioned as bits of information that can be transported along nanoracetracks. However, temperature, defects, and/or granularity can produce diffusion, pinning, and, in general, modification in their dynamics. These effects may cause undesired errors in information transport. We present simulations of a realistic system where both the (room) temperature and sample granularity are taken into account. Key feasibility magnitudes, such as the success probability of a skyrmion traveling a given distance along the racetrack, are calculated. The results are evaluated in terms of the eventual loss of skyrmions by pinning, destruction at the edges, or excessive delay due to granularity. The model proposed is based on the Fokker–Planck equation resulting from Thiele's rigid model for skyrmions. The results could serve to establish error detection criteria and, in general, to discern the dynamics of skyrmions in realistic situations.

Graphical abstract: Survival of skyrmions along granular racetracks at room temperature

Supplementary files

Article information

Article type
Paper
Submitted
27 Jun 2023
Accepted
27 Jul 2023
First published
28 Jul 2023
This article is Open Access
Creative Commons BY license

Nanoscale Adv., 2023,5, 4728-4734

Survival of skyrmions along granular racetracks at room temperature

J. Castell-Queralt, G. Abad-López, L. González-Gómez, N. Del-Valle and C. Navau, Nanoscale Adv., 2023, 5, 4728 DOI: 10.1039/D3NA00464C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements