Topological dynamics of vortex-line networks in hexagonal manganites

Fei Xue, Nan Wang, Xueyun Wang, Yanzhou Ji, Sang Wook Cheong, Long Qing Chen

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The two-dimensional XY model is the first well-studied system with topological point defects. On the other hand, although topological line defects are common in three-dimensional systems, the evolution mechanism of line defects is not fully understood. The six domains in hexagonal manganites converge to vortex lines in three dimensions. Using phase-field simulations, we predicted that during the domain coarsening process, the vortex-line network undergoes three types of basic topological changes, i.e., vortex-line loop shrinking, coalescence, and splitting. It is shown that the vortex-antivortex annihilation controls the scaling dynamics.

Original languageEnglish (US)
Article number020101
JournalPhysical Review B
Volume97
Issue number2
DOIs
StatePublished - Jan 16 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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