Collective magnetism at multiferroic vortex domain walls

Yanan Geng, N. Lee, Y. J. Choi, S. W. Cheong, Weida Wu

Research output: Contribution to journalArticle

61 Citations (Scopus)


Cross-coupled phenomena of multiferroic domains and domain walls are of fundamental scientific and technological interest. Using cryogenic magnetic force microscopy, we find alternating net magnetic moments at ferroelectric domain walls around vortex cores in multiferroic hexagonal ErMnO3, which correlate with each other throughout the entire vortex network. This collective nature of domain wall magnetism originates from the uncompensated Er3+ moments at domain walls and the self-organization of the vortex network. Our results demonstrate that the collective domain wall magnetism can be controlled by external magnetic fields and represent a major advancement in the manipulation of local magnetic moments by harnessing cross-coupled domain walls.

Original languageEnglish
Pages (from-to)6055-6059
Number of pages5
JournalNano letters
Issue number12
Publication statusPublished - 2012 Dec 12


All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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