Magnetic structures and Z<sub>2</sub> vortices in a non-Abelian gauge model
The magnetic order of the triangular lattice with antiferromagnetic interactions is described by an SO(3) field and allows for the presence of Z<sub>2</sub> magnetic vortices as defects. In this work we show how these Z<sub>2</sub> vortices can be fitted into a local SU(2) ga...
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| Autores principales: | , , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/98235 https://ri.conicet.gov.ar/11336/86103 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.124033 |
| Aporte de: |
| Sumario: | The magnetic order of the triangular lattice with antiferromagnetic interactions is described by an SO(3) field and allows for the presence of Z<sub>2</sub> magnetic vortices as defects. In this work we show how these Z<sub>2</sub> vortices can be fitted into a local SU(2) gauge theory. We propose simple Ansätze for vortex configurations and calculate their energies using well-known results of the Abelian gauge model. We comment on how Dzyaloshinskii-Moriya interactions could be derived from a non-Abelian gauge theory and speculate on their effect on nontrivial configurations. |
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