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Hole depletion of ladders in Sr14Cu24CX41 induced by correlation effects.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Feb2012, Vol. 85 Issue 7, p1-6. 6p. - Publication Year :
- 2012
-
Abstract
- The hole distribution in Sr14Cu24CX41 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)14Cu24041. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 85
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 74434727
- Full Text :
- https://doi.org/10.1103/PhysRevB.85.075108