Hole depletion of ladders in Sr 14Cu 24O 41 induced by correlation effects

V. Ilakovac, C. Gougoussis, M. Calandra, N. B. Brookes, V. Bisogni, S. G. Chiuzbaian, J. Akimitsu, O. Milat, S. Tomić, C. F. Hague

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6 Citations (Scopus)

Abstract

The hole distribution in Sr 14Cu 24O 41 is studied by low-temperature polarization-dependent O K near-edge x-ray absorption fine-structure measurements and state-of-the-art electronic structure calculations that include core-hole and correlation effects in a mean-field approach. Contrary to all previous analysis, based on semiempirical models, we show that correlations and antiferromagnetic ordering favor the strong chain-hole attraction. For the remaining small number of holes accommodated on ladders, leg sites are preferred to rung sites. The small hole affinity of rung sites explains naturally the one-dimensional to two-dimensional crossover in the phase diagram of (La,Y,Sr,Ca) 14Cu 24O 41.

Original languageEnglish
Article number075108
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number7
DOIs
Publication statusPublished - Feb 7 2012
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Ilakovac, V., Gougoussis, C., Calandra, M., Brookes, N. B., Bisogni, V., Chiuzbaian, S. G., Akimitsu, J., Milat, O., Tomić, S., & Hague, C. F. (2012). Hole depletion of ladders in Sr 14Cu 24O 41 induced by correlation effects. Physical Review B - Condensed Matter and Materials Physics, 85(7), [075108]. https://doi.org/10.1103/PhysRevB.85.075108