Characterizing breathing dynamics of magnetic skyrmions and antiskyrmions within the Hamiltonian formalism
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- BF McKeever
- DR Rodrigues
- D Pinna
- Ar Abanov
- Jairo Sinova
- K Everschor-Sitte
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000459930300004&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1103/PhysRevB.99.054430
- eISSN
- 2469-9969
- Externe Identifier
- Clarivate Analytics Document Solution ID: HN1EQ
- ISSN
- 2469-9950
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- PHYSICAL REVIEW B
- Artikelnummer
- ARTN 054430
- Datum der Veröffentlichung
- 2019
- Status
- Published
- Titel
- Characterizing breathing dynamics of magnetic skyrmions and antiskyrmions within the Hamiltonian formalism
- Sub types
- Article
- Ausgabe der Zeitschrift
- 99
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Autoren
- BF McKeever
- DR Rodrigues
- D Pinna
- Ar Abanov
- Jairo Sinova
- K Everschor-Sitte
- DOI
- 10.1103/physrevb.99.054430
- eISSN
- 2469-9969
- ISSN
- 2469-9950
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Physical Review B
- Sprache
- en
- Artikelnummer
- 054430
- Online publication date
- 2019
- Status
- Published online
- Herausgeber
- American Physical Society (APS)
- Herausgeber URL
- http://dx.doi.org/10.1103/physrevb.99.054430
- Datum der Datenerfassung
- 2019
- Titel
- Characterizing breathing dynamics of magnetic skyrmions and antiskyrmions within the Hamiltonian formalism
- Ausgabe der Zeitschrift
- 99
Data source: Crossref
- Abstract
- We derive an effective Hamiltonian system describing the low energy dynamics of circular magnetic skyrmions and antiskyrmions. Using scaling and symmetry arguments we model (anti-)skyrmion dynamics through a finite set of coupled, canonically conjugated, collective coordinates. The resulting theoretical description is independent of both micromagnetic details as well as any specificity in the ansatz of the skyrmion profile. Based on the Hamiltonian structure we derive a general description for breathing dynamics of (anti-)skyrmions in the limit of radius much larger than the domain wall width. The effective energy landscape reveals two qualitatively different types of breathing behavior. For small energy perturbations we reproduce the well-known small breathing mode excitations, where the magnetic moments of the skyrmion oscillate around their equilibrium solution. At higher energies we find a breathing behavior where the in-plane angle of the skyrmion continuously precesses, transforming N\'eel to Bloch skyrmions and vice versa. For a damped system we observe the transition from the continuously rotating and breathing skyrmion into the oscillatory one. We analyze the characteristic frequencies of both breathing types, as well as their amplitudes and distinct energy dissipation rates. For rotational (oscillatory) breathing modes we predict on average a linear (exponential) decay in energy. We argue that this stark difference in dissipative behavior should be observable in the frequency spectrum of excited (anti-)skyrmions.
- Autoren
- BF McKeever
- DR Rodrigues
- D Pinna
- Ar Abanov
- Jairo Sinova
- K Everschor-Sitte
- Autoren-URL
- http://arxiv.org/abs/1811.09949v1
- Zeitschrift
- Phys. Rev. B
- Schlüsselwörter
- cond-mat.mes-hall
- cond-mat.mes-hall
- Notes
- 16 pages, 7 figures, 1 table
- Paginierung
- 054430
- Datum der Veröffentlichung
- 2018
- Herausgeber URL
- http://dx.doi.org/10.1103/PhysRevB.99.054430
- Datum der Datenerfassung
- 2018
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2018
- Titel
- Characterizing breathing dynamics of magnetic (anti-)skyrmions within the Hamiltonian formalism
- Ausgabe der Zeitschrift
- 99
Files
1811.09949v1.pdf
Data source: arXiv
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