The Cu Kβ/Kα intensity ratios of some copper compounds and high-Tc superconducting cuprates

Chu-Nan Chang; Shih Kuan Chiou; Ching Rong Luo

doi:10.1016/0038-1098(93)90545-X

The Cu K_β/K_α intensity ratios of some copper compounds and high-T_c superconducting cuprates

Chu-Nan Chang, Shih Kuan Chiou, Ching Rong Luo

Department of Physics

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

The Cu K_β/K_α intensity ratios have been measured for copper compounds of Cu₂O, CuO, Cu₂S, CuS, CuF₂ and CuCl₂ and high-T_c superconducting cuprates of Y(Ba_1-x Sr_x)₂Cu_3-0.21xMo_0.21xO_y with x=0 - 1. The large increase of Cu K_β/K_α intensity ratio in high-T_c superconductor relative to other copper compounds is interpreted as the increase of transitions from Cu valence band to Cu(1s) state, when Cu(3d) and O(2p) are highly hybridized. The decrease ofCuK_β/K_α intensity ratio with the increase of x in the high-T_c superconducting cuprates indicates both the Sr and Mo ions have negative input to the degree of hybridization of Cu(3d) and O(2p) bands.

Original language	English
Pages (from-to)	987-992
Number of pages	6
Journal	Solid State Communications
Volume	87
Issue number	11
DOIs	https://doi.org/10.1016/0038-1098(93)90545-X
Publication status	Published - 1993 Jan 1

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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title = "The Cu Kβ/Kα intensity ratios of some copper compounds and high-Tc superconducting cuprates",

abstract = "The Cu Kβ/Kα intensity ratios have been measured for copper compounds of Cu2O, CuO, Cu2S, CuS, CuF2 and CuCl2 and high-Tc superconducting cuprates of Y(Ba1-x Srx)2Cu3-0.21xMo0.21xOy with x=0 - 1. The large increase of Cu Kβ/K α intensity ratio in high-Tc superconductor relative to other copper compounds is interpreted as the increase of transitions from Cu valence band to Cu(1s) state, when Cu(3d) and O(2p) are highly hybridized. The decrease ofCuKβ/Kα intensity ratio with the increase of x in the high-Tc superconducting cuprates indicates both the Sr and Mo ions have negative input to the degree of hybridization of Cu(3d) and O(2p) bands.",

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AU - Chang, Chu-Nan

AU - Chiou, Shih Kuan

AU - Luo, Ching Rong

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N2 - The Cu Kβ/Kα intensity ratios have been measured for copper compounds of Cu2O, CuO, Cu2S, CuS, CuF2 and CuCl2 and high-Tc superconducting cuprates of Y(Ba1-x Srx)2Cu3-0.21xMo0.21xOy with x=0 - 1. The large increase of Cu Kβ/K α intensity ratio in high-Tc superconductor relative to other copper compounds is interpreted as the increase of transitions from Cu valence band to Cu(1s) state, when Cu(3d) and O(2p) are highly hybridized. The decrease ofCuKβ/Kα intensity ratio with the increase of x in the high-Tc superconducting cuprates indicates both the Sr and Mo ions have negative input to the degree of hybridization of Cu(3d) and O(2p) bands.

AB - The Cu Kβ/Kα intensity ratios have been measured for copper compounds of Cu2O, CuO, Cu2S, CuS, CuF2 and CuCl2 and high-Tc superconducting cuprates of Y(Ba1-x Srx)2Cu3-0.21xMo0.21xOy with x=0 - 1. The large increase of Cu Kβ/K α intensity ratio in high-Tc superconductor relative to other copper compounds is interpreted as the increase of transitions from Cu valence band to Cu(1s) state, when Cu(3d) and O(2p) are highly hybridized. The decrease ofCuKβ/Kα intensity ratio with the increase of x in the high-Tc superconducting cuprates indicates both the Sr and Mo ions have negative input to the degree of hybridization of Cu(3d) and O(2p) bands.

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