Peculiar hole doping by Ca substitution in cuprate superconductors

標題:	Peculiar hole doping by Ca substitution in cuprate superconductors
作者:	Lin, JY Chung, PC Liu, SJ Hsiang, CC Lin, PH Lee, JM Chen, JM Wu, KH Gou, YS 電子物理學系物理研究所 Department of Electrophysics Institute of Physics
公開日期:	1-May-2003
摘要:	The doping effect of Ca substitution in Y0.7Ca0.3Ba2Cu3Oy has been studied for y=6.9 and 6 by the x-ray absorption near edge spectroscopy (XANES). While Ca doping leads to an obvious increase in hole concentration in the CuO2 planes in Y0.7Ca0.3Ba2Cu3O6.9, XANES indicates absence of this doping effect in Y0.7Ca6.3Ba2Cu3O6. These two contradict results suggest that the doping effect by Ca substitution could be sensitive to the oxygen content when y similar to6.0. Comparisons with others' works are made.
URI:	http://dx.doi.org/10.1023/A:1022953909161 http://hdl.handle.net/11536/27926
ISSN:	0022-2291
DOI:	10.1023/A:1022953909161
期刊:	JOURNAL OF LOW TEMPERATURE PHYSICS
Volume:	131
Issue:	3-4
起始頁:	337
結束頁:	341
Appears in Collections:	Conferences Paper

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