Accelerating, guiding, and compressing skyrmions by defect rails

Josep Castell-Queralt, Leonardo González-Gómez, Nuria Del-Valle, Alvaro Sanchez, Carles Navau*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

28 Citations (Scopus)


Magnetic skyrmions are promising candidates as information carriers in spintronic devices. The transport of individual skyrmions in a fast and controlled way is a key issue in this field. Here we introduce a platform for accelerating, guiding and compressing skyrmions along predefined paths. The guiding mechanism is based on two parallel line defects (rails), one attractive and the other repulsive. Numerical simulations, using parameters from state-of-the-art experiments, show that the speed of the skyrmions along the rails can be increased up to an order of magnitude with respect to the non-defect case whereas the distance between rails can be as small as the initial radius of the skyrmions. In this way, the flux of information that can be coded and transported with magnetic skyrmions could be significantly increased.

Original languageEnglish
Pages (from-to)12589-12594
Number of pages6
Issue number26
Publication statusPublished - 14 Jul 2019


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