Theory of magneto-elastic properties of interacting multipoles

N. Fukushima, T. Kuromaru, H. Kusunose, Y. Kuramoto

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Anomalous magneto-elastic property of interacting multipoles is investigated with account of fluctuation effects. We use two complementary methods both of which deal with fluctuation effects beyond the mean-field theory. One is to take the two-site model which has a multipolar coupling between them and to solve the model exactly. The other approach is to take the effective medium theory for the lattice system. It takes into account fluctuations up to O(1/zn) around the mean-field theory where zn is the number of interacting neighbors. In the latter approach, it is found that some components of the local strain susceptibility increase as the fluctuation is suppressed by a magnetic field. This leads to increase of corresponding uniform strain susceptibility, and softening of the corresponding elastic constant.

Original languageEnglish
Pages (from-to)538-539
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - 2000 Jun 1
EventYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
Duration: 1999 Aug 241999 Aug 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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