Influence of the Incommensurability inSr14−xCaxCu24O41Family Compounds

2003/12/31 by Alain Gellé, Marie-Bernadette Lepetit · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.92.236402

published as Phys. Rev. Letters {\bf 92}, 236402 (2004) · 4 pages, 4 figures

arxiv created 2004/04/14 · openalex publication_date 2004/06/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the influence of the structural modulation on the low energy physics of the Sr14-xCaxCu24O41 oxides, using ab initio determination of the on-site and nearest-neighbor effective parameters. The structural modulations appear to be the key degree of freedom responsible for the low energy properties, such as the electron localization, the formation of dimers in the x=0 compound, or the antiferromagnetic order in the x=13.6 compound.

Citations

• Environment effects on effective magnetic exchange integrals and local spectroscopy of extended strongly correlated systems
• Role of dynamical polarization of the ligand-to-metal charge transfer excitations inab initiodetermination of effective exchange parameters

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