Abstract
We examine two proposed models of the observed charge ordering (CO) in the quasi-1D, 1/4-filled organic charge transfer solids. The models are characterized by the site charge densities ..1010.. and ..1100.. respectively. Using a Peierls-extended Hubbard model to include both electron-electron and electron-phonon interactions, we show that 1) the ..1010..CO can occur only when the nearest-neighbor Coulomb repulsion is sufficiently strong; 2) a spin-Peierls state can coexist with the ..1010..CO; and 3) experimental evidence clearly supports ..1100.. CO in the (TMTSP) and the 1:2 anionic CTS, while in the (TMTTF) salts the nature of the order is not yet clear.
Original language | English (US) |
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Pages (from-to) | 681-682 |
Number of pages | 2 |
Journal | Synthetic Metals |
Volume | 135-136 |
DOIs | |
State | Published - Apr 4 2003 |
Keywords
- Organic conductors based on radical cation and/or anion salts
- Organic superconductors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry