The quantum nature of skyrmions and half-skyrmions in Cu 2 OSeO 3

Oleg Janson, Ioannis Rousochatzakis, Alexander A. Tsirlin, Marilena Belesi, Andrei A. Leonov, Ulrich K. Rößler, Jeroen Van Den Brink, Helge Rosner

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Abstract

The Skyrme-particle, the skyrmion, was introduced over half a century ago in the context of dense nuclear matter. But with skyrmions being mathematical objects -special types of topological solitons -they can emerge in much broader contexts. Recently skyrmions were observed in helimagnets, forming nanoscale spin-textures. Extending over length scales much larger than the interatomic spacing, they behave as large, classical objects, yet deep inside they are of quantum nature. Penetrating into their microscopic roots requires a multi-scale approach, spanning the full quantum to classical domain. Here, we achieve this for the first time in the skyrmionic Mott insulator Cu 2 OSeO 3. We show that its magnetic building blocks are strongly fluctuating Cu 4 tetrahedra, spawning a continuum theory that culminates in 51a ‰nm large skyrmions, in striking agreement with experiment. One of the further predictions that ensues is the temperature-dependent decay of skyrmions into half-skyrmions. & copy; 2014 Macmillan Publishers Limited. All rights reserved.

Original languageEnglish (US)
Article number5376
JournalNature communications
Volume5
DOIs
StatePublished - 2014

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Solitons
Textures
Temperature
tetrahedrons
textures
solitary waves
Experiments
spacing
insulators
continuums
decay
predictions
temperature

Cite this

Janson, O., Rousochatzakis, I., Tsirlin, A. A., Belesi, M., Leonov, A. A., Rößler, U. K., ... Rosner, H. (2014). The quantum nature of skyrmions and half-skyrmions in Cu 2 OSeO 3. Nature communications, 5, [5376]. https://doi.org/10.1038/ncomms6376

The quantum nature of skyrmions and half-skyrmions in Cu 2 OSeO 3. / Janson, Oleg; Rousochatzakis, Ioannis; Tsirlin, Alexander A.; Belesi, Marilena; Leonov, Andrei A.; Rößler, Ulrich K.; Van Den Brink, Jeroen; Rosner, Helge.

In: Nature communications, Vol. 5, 5376, 2014.

Research output: Contribution to journalArticle

Janson, O, Rousochatzakis, I, Tsirlin, AA, Belesi, M, Leonov, AA, Rößler, UK, Van Den Brink, J & Rosner, H 2014, 'The quantum nature of skyrmions and half-skyrmions in Cu 2 OSeO 3', Nature communications, vol. 5, 5376. https://doi.org/10.1038/ncomms6376
Janson O, Rousochatzakis I, Tsirlin AA, Belesi M, Leonov AA, Rößler UK et al. The quantum nature of skyrmions and half-skyrmions in Cu 2 OSeO 3. Nature communications. 2014;5. 5376. https://doi.org/10.1038/ncomms6376
Janson, Oleg ; Rousochatzakis, Ioannis ; Tsirlin, Alexander A. ; Belesi, Marilena ; Leonov, Andrei A. ; Rößler, Ulrich K. ; Van Den Brink, Jeroen ; Rosner, Helge. / The quantum nature of skyrmions and half-skyrmions in Cu 2 OSeO 3. In: Nature communications. 2014 ; Vol. 5.
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