Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/4837
Title: Determination of hole distribution in Sr14-xCaxCu24O41 using soft x-ray absorption spectroscopy at the Cu L3 edge.
Authors: Huang, MJ
Deng, G
Chin, YY
Hu, Z
Cheng, JG
Chou, FC
Conder, K
Zhou, JS
Pi, TW
Goodenough, JB
Lin, HJ
Chen, CT
Keywords: Holes
Superconductivity
Crystals
Absorption
Copper
Spectroscopy
Issue Date: 22-Jul-2013
Publisher: American Physical Society
Citation: Huang, M. J., Deng, G., Chin, Y. Y., Hu, Z. Cheng, J. G., Chou, F. C., Conder, K., Zhou, J. S., Pi, T. W., Goodenough, J. B., Lin, H. J., & Chen, C. T. (2013). Determination of hole distribution in Sr14-xCaxCu24O41 using soft x-ray absorption spectroscopy at the Cu L-3 edge. Physical Review B, 88 (1), Article Number 014520. doi:10.1103/PhysRevB.88.014520
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. © 2013, American Physical Society.
Gov't Doc #: 5052
URI: http://dx.doi.org/10.1103/PhysRevB.88.014520
http://apo.ansto.gov.au/dspace/handle/10238/4837
ISSN: 1098-0121
Appears in Collections:Journal Articles

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