Schuette, Christoph and Rosch, Achim ORCID: 0000-0002-6586-5721 (2014). Dynamics and energetics of emergent magnetic monopoles in chiral magnets. Phys. Rev. B, 90 (17). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969
Full text not available from this repository.Abstract
The formation and destruction of topologically quantized magnetic whirls, i.e., the so-called skyrmions, in chiral magnets is driven by the creation and motion of singular hedgehog defects. These Bloch points can be identified with emergent magnetic monopoles and antimonopoles. We investigate how the energetics of and forces between monopoles and antimonopoles influence their creation rate and dynamics. We study a single skyrmion line defect in the helical phase using both micromagnetic simulations and a Ginzburg-Landau analysis. Monopole-antimonopole pairs are created in a thermally activated process, largely controlled by the (core) energy of the monopole. The force between monopoles and antimonopoles is linear in distance and described by a string tension. The sign and size of the string tension determines the stability of the phases and the velocity of the monopoles.
Item Type: | Journal Article | ||||||||||||
Creators: |
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URN: | urn:nbn:de:hbz:38-423058 | ||||||||||||
DOI: | 10.1103/PhysRevB.90.174432 | ||||||||||||
Journal or Publication Title: | Phys. Rev. B | ||||||||||||
Volume: | 90 | ||||||||||||
Number: | 17 | ||||||||||||
Date: | 2014 | ||||||||||||
Publisher: | AMER PHYSICAL SOC | ||||||||||||
Place of Publication: | COLLEGE PK | ||||||||||||
ISSN: | 2469-9969 | ||||||||||||
Language: | English | ||||||||||||
Faculty: | Unspecified | ||||||||||||
Divisions: | Unspecified | ||||||||||||
Subjects: | no entry | ||||||||||||
Uncontrolled Keywords: |
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URI: | http://kups.ub.uni-koeln.de/id/eprint/42305 |
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