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  The quantum nature of skyrmions and half-skyrmions in Cu2OSeO3

Janson, O., Rousochatzakis, I., Tsirlin, A. A., Belesi, M., Leonov, A. A., Rößler, U. K., et al. (2014). The quantum nature of skyrmions and half-skyrmions in Cu2OSeO3. Nature Communications, 5: 5376, pp. 1-11. doi:10.1038/ncomms6376.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9C2B-A Version Permalink: http://hdl.handle.net/21.11116/0000-0000-FF11-E
Genre: Journal Article

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 Creators:
Janson, Oleg1, Author              
Rousochatzakis, Ioannis2, Author
Tsirlin, Alexander A.3, Author              
Belesi, Marilena2, Author
Leonov, Andrei A.2, Author
Rößler, Ulrich K.2, Author
van den Brink, Jeroen2, Author
Rosner, Helge4, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2External Organizations, ou_persistent22              
3Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
4Helge Rosner, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863450              

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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 Cu2OSeO3. We show that its magnetic building blocks are strongly fluctuating Cu-4 tetrahedra, spawning a continuum theory that culminates in 51nm large skyrmions, in striking agreement with experiment. One of the further predictions that ensues is the temperature-dependent decay of skyrmions into half-skyrmions.

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Language(s): eng - English
 Dates: 2014-11-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000345740200007
DOI: 10.1038/ncomms6376
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 5 Sequence Number: 5376 Start / End Page: 1 - 11 Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723