Skyrmions at the Workshop on Gauge Theories and Gravity

Excited to participate at the Workshop on Gauge Theories and Gravity 1-3 July 2022 with such a diverse range of related Physics talks. Happy to contribute an invited talk on “Magnetic Skyrmions for Nanocomputing”. Inspired by earlier theoretical work from the community on conservation laws as suitable moments of a topological density and what these can tell us about the dynamics of topological and non-topological textures (e.g. N. Papanicolaou and T. N. Tomaras, Nuclear Physics B, 360, 425–462 (1991)) (the Landau-Lifshitz equation can be viewed as a U(1) gauge theory), our presentation aimed to provide a link from earlier theoretical results to modern results from the exciting field of Skyrmionics! Subsequently, we showed how by manipulating nanoscale skyrmionic spin textures embedded in thin-film devices with electrical currents, and exploiting their topology, may be used for neuromorphic computing and nanocomputing.

New Paper at Physical Review Research! #topological #singularities

Our recent theoretical/computational paper on “Tunable terahertz oscillation arising from Bloch-point dynamics in chiral magnets” has now been published at the Physical Review Research journal! Congratulations to the lead author, our PhD student Yu Li. The work arose from a collaboration between the University of Manchester with the Metal Physics and Technology group at the ETH Zürich. This work reveals that the formation/annihilation processes of skyrmions will give rise to an emergent electric field with a frequency in the THz regime. The electric signal is due to the ultra-fast Bloch-point propagation, and both the amplitude and frequency can be tuned by the manipulation of Bloch-point dynamics. Our study provides a concept of directly exploiting topological singularities that may be relevant for THz skyrmion-based electronic devices.

HMM 2019 @ Heraklion, Crete

Really excited to participate the 12th International Symposium on Hysteresis Modeling and Micromagnetics (HMM2019) in Crete, Greece from 19th-22nd of May, 2019. Yu Li, a PhD member of our team, presented a talk in the first session “Magnetic Solitons I”, with the title Controllable THz Bloch-point propagation in the switching process of magnetic skyrmions“. We also presented a poster from our recently published workCollective antiskyrmion-mediated phase transition and defect-induced melting in chiral magnetic films“.

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Talk on Skyrmions @ the Future Perspectives on Novel Magnetic Materials workshop

Excited to be at the the Future Perspectives on Novel Magnetic Materials workshop taking part from May 29-June 3, 2018 in beautiful Santorini, Greece. The workshop’s program focused on the development of high anisotropy magnetic materials, ii) non-collinear spin structures that exhibit skyrmion and anti-skyrmions and iii) magnetic materials that display topological transport and electronic properties. Happy to be invited to contribute a talk on Thursday the 31st of May, on recent numerical and experimental results on magnetic skyrmions.