Valences of Cu in Y1-xCaxBa2Cu3O6+y

Chin. Phys. Lett.

1998, Vol. 15

Issue (7): 528-529 DOI:

Original Articles

Valences of Cu in Y_1-xCa_xBa₂Cu₃O_6+y

WU Zhi-jian;MENG Qing-bo;ZHANG Si-yuan

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

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WU Zhi-jian, MENG Qing-bo, ZHANG Si-yuan 1998 Chin. Phys. Lett. 15 528-529

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Abstract The valences of Cu in Y_1-xCa_xBa₂Cu₃O_6+y have been investigated by using complex chemical bond theory. The results for the valences of Cu(1) and Cu(2) in the calculation suggest that the holes introduced by calcium substitution only reside in CuO₂ planes, and there is a competition mechanism for the hole density in CuO₂ planes between Ca doping and oxygen depletion. These conclusions are satisfactorily in agreement with experiments.

Keywords: 74.62.Dh 74.72.Bk

Published: 01 July 1998

PACS:	74.62.Dh	(Effects of crystal defects, doping and substitution)
	74.72.Bk

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I7/0528

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	MENG Qing-bo
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