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 language | English (US) |
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Pages (from-to) | 365-370 |
Number of pages | 6 |
Journal | Journal of Low Temperature Physics |
Volume | 142 |
Issue number | 3-4 |
DOIs | |
State | Published - Feb 2006 |
Keywords
- 71.30.+h
- 71.45.Lr
- 74.70.Kn
- 75.10.Pq
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- General Materials Science
- Condensed Matter Physics