Charge ordering and spin gap transitions in quarter-filled ladders

R. Torsten Clay, S. Mazumdar

Research output: Contribution to journalArticle

Abstract

Several new families of charge transfer solids with ladder-like structure show unusually high spin gap transition temperatures. We argue that these materials are best described by a 1/4-filled ladder with zigzag interstack bonds. We find that in the 1/4-filled zigzag ladder, a cooperative bond-charge ordering leads to the formation of local singlets and a spin gap. The spin gap for the zigzag ladder is an order of magnitude larger than that found in equivalent one dimensional systems.

Original languageEnglish (US)
Pages (from-to)365-370
Number of pages6
JournalJournal of Low Temperature Physics
Volume142
Issue number3-4
DOIs
StatePublished - Feb 1 2006

Keywords

  • 71.30.+h
  • 71.45.Lr
  • 74.70.Kn
  • 75.10.Pq

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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