Fracton excitations in a diluted Heisenberg antiferromagnet near the percolation threshold: RbMn0.39Mg0.61F3

H. Ikeda, J. A. Fernandez-Baca, R. M. Nicklow, M. Takahashi, K. Iwasa

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16 Citations (Scopus)

Abstract

Using neutron inelastic scattering techniques we investigated the magnetic excitations in a diluted Heisenberg antiferromagnet (RbMncMg 1-cF3 with c=0.39) close to the percolation threshold of cp=0.312. No indication of propagating spin waves was observed throughout the Brillouin zone, but a broad peak superimposed on Ising-cluster excitations was observed. The origin of this broad peak is attributed to the excitation of fractons in a percolating network.

Original languageEnglish
Article number015
Pages (from-to)10543-10549
Number of pages7
JournalJournal of Physics: Condensed Matter
Volume6
Issue number48
DOIs
Publication statusPublished - 1994 Dec 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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