Magnetoelectric classification of skyrmions
| Autor: | Nicola Spaldin, SAYANTIKA BHOWAL |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Condensed Matter::Quantum Gases
Condensed Matter::Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter::Other Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Physics and Astronomy FOS: Physical sciences Condensed Matter::Mesoscopic Systems and Quantum Hall Effect |
| Zdroj: | Physical Review Letters, 128 (22) |
| ISSN: | 0038-5646 |
| DOI: | 10.48550/arxiv.2201.01667 |
| Popis: | We develop a general theory to classify magnetic skyrmions and related spin textures in terms of their magnetoelectric multipoles. Since magnetic skyrmions are now established in insulating materials, where the magnetoelectric multipoles govern the linear magnetoelectric response, our classification provides a recipe for manipulating the magnetic properties of skyrmions using applied electric fields. We apply our formalism to skyrmions and anti-skyrmions of different helicities, as well as to magnetic bimerons, which are topologically, but not geometrically, equivalent to skyrmions. We show that the non-zero components of the magnetoelectric multipole and magnetoelectric response tensors are uniquely determined by the topology, helicity and geometry of the spin texture. Therefore, we propose straightforward linear magnetoelectric response measurements as an alternative to Lorentz microscopy for characterizing insulating skyrmionic textures. Comment: 6 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|