Role of frustration in quasi 1D conductor - Charge ordering and/or CDW in (R 1, R 2-DCNQI) 2M (M=Ag, Li, Cu) system

H. Sawa, Yusuke Wakabayashi, R. Tazaki, T. Kakiuchi, K. Kanoda, R. Kato

Research output: Contribution to journalArticlepeer-review

Abstract

Synchrotron X-ray high-resolution measurements have been performed to investigate the nature of the insulating state of a quarter-filled quasi-one-dimensional conductor (DI-DCNQI) 2Ag and the π-d interacted conductor (DBr-DCNQI) 2Cu. The two-fold structure in the ground state of (DI-DCNQI) 2Ag system consists of not only charge ordering columns but also monotonic charge dimerized columns caused by frustration among DCNQI columns. On the other hand, Cu salt in the insulating phase realizes a commensurate structure where the Cu charge ordering is coupled with the 3c-CDW in the insulator phase. The frustration among charged columns is restrained by the charge ordering of the Cu ions.

Original languageEnglish
Pages (from-to)359-364
Number of pages6
JournalJournal of Low Temperature Physics
Volume142
Issue number3-4
DOIs
Publication statusPublished - 2006 Feb 1
Externally publishedYes

Keywords

  • 61.10.Nz
  • 71.30.+h

ASJC Scopus subject areas

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

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