Charge ordering and spin gap transitions in quarter-filled ladders

R. Torsten Clay; S. Mazumdar

doi:10.1007/s10909-006-9119-6

Charge ordering and spin gap transitions in quarter-filled ladders

R. Torsten Clay
, S. Mazumdar

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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)
Pages (from-to)	365-370
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	142
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-006-9119-6
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

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10.1007/s10909-006-9119-6

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AB - 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.

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KW - 74.70.Kn

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Charge ordering and spin gap transitions in quarter-filled ladders

Abstract

Keywords

ASJC Scopus subject areas

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