Theoretical analysis of the experiments on the double-spin-chain compound

Tota Nakamura, Kiyomi Okamoto

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


We have analyzed the experimental susceptibility data of (Formula presented) and found that the data are well explained by the double-spin-chain models with strong antiferromagnetic dimerization. Large quantum Monte Carlo calculations were performed in the spin systems with frustration. This was made possible by removing the negative-sign problem with the use of the dimer basis that has spin-reversal symmetry. The numerical data agree with the experimental data within 1% relative errors in the whole temperature region. We also present a theoretical estimate for the dispersion relation and compare it with recent neutron-scattering experiments. Finally, the magnitude of each interaction bond is predicted.

Original languageEnglish
Pages (from-to)2411-2414
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number5
Publication statusPublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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