Spin and Charge Necklaces at Commensurate Filling

K. Kikoin, M. N. Kiselev

Research output: Contribution to journalArticlepeer-review


The charge and spin properties of spin chains decorated with dimers and closed trimers (equilateral triangles) with commensurate partial filling (1/4 and 1/3, respectively) are considered. It is shown that due to the charge separation both systems prefer the ground state with even occupation per elementary cell, where the spin spectrum possesses the Haldane gap for negative spin exchange and magnon-like for positive coupling. The charge spectrum is always gapped.

Original languageEnglish
Article number042092
JournalJournal of Physics: Conference Series
Issue number4
StatePublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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