Cancellation of oscillatory behaviours in incommensurate region

Takahiro Murashima, Kiyohide Nomura

Research output: Contribution to journalArticlepeer-review


In several frustrated systems, incommensurate behaviours are often observed. For the S ≤ 1 bilinear-biquadratic model, we show that the main oscillatory behaviour, which is proportional to the free edge spins, is eliminated in the incommensurate subphase, considering the average of triplet and singlet energy spectra under open boundary conditions. In the same way, the π-mode oscillation is also removed in the commensurate subphase. Moreover, we find that higher-order corrections are exponentially decaying from an analysis of small-size data.

Original languageEnglish
Article number145210
JournalJournal of Physics Condensed Matter
Issue number14
Publication statusPublished - Apr 11 2007

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics


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