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  Determination of hole distribution in Sr14-xCaxCu24O41 using soft x-ray absorption spectroscopy at the Cu L3 edge

Huang, M.-J., Deng, G., Chin, Y. Y., Hu, Z., Cheng, J.-G., Chou, F. C., et al. (2013). Determination of hole distribution in Sr14-xCaxCu24O41 using soft x-ray absorption spectroscopy at the Cu L3 edge. Physical Review B, 88(1): 014520, pp. 014520-1-014520-6. doi:10.1103/PhysRevB.88.014520.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E8C-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E8D-6
Genre: Journal Article

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Huang, M.-J., Author
Deng, G., Author
Chin, Y. Y.1, Author              
Hu, Z.2, Author              
Cheng, J.-G., Author
Chou, F. C., Author
Conder, K., Author
Zhou, J.-S., Author
Pi, T.-W., Author
Goodenough, J. B., Author
Lin, H.-J., Author
Chen, C. T., Author
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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 Abstract: The physical properties of Sr14-xCaxCu24O41 are determined by the hole distribution between the edge-shared CuO2 chain and the corner-shared Cu2O3 two-leg ladder, but inconsistent results on the hole distribution were obtained in various experimental works in recent decades. In this work we reinvestigate the hole distribution by soft x-ray absorption spectroscopy at the Cu L-3 edge. By comparing with the pure ladder and the pure chain systems, we can unambiguously distinguish between the hole distributions in the chain and the ladder. We have found that there are 5.3 holes in the edge-shared chain and 0.7 holes in the corner-shared ladder on average for Sr14Cu24O41. Upon Ca substitution, the holes gradually transfer from the edge-shared chain to the corner-shared ladder, and there are up to 1.21 holes in the corner-shared ladder for Sr1.8Ca12.2Cu24O41.

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 Dates: 2013-07-22
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 670766
ISI: 000322112400008
DOI: 10.1103/PhysRevB.88.014520
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Title: Physical Review B
Source Genre: Journal
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Pages: - Volume / Issue: 88 (1) Sequence Number: 014520 Start / End Page: 014520-1 - 014520-6 Identifier: ISSN: 1098-0121