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Citation: Zhao Liang-Zhong. The Cu-O Bond Type and Partial Charge on Oxygen in High-T_c Superconductors[J]. Acta Physico-Chimica Sinica, ;1995, 11(11): 1053-1056. doi: 10.3866/PKU.WHXB19951119 shu

The Cu-O Bond Type and Partial Charge on Oxygen in High-T_c Superconductors

Zhao Liang-Zhong

1.
Institute of Chemistry,Academia Sinica,Beijing 100080

Received Date: 25 February 1995
Available Online: 15 November 1995

The Cu2p XPS satellites of high-Tc superconductors are compared with one of the Cu2+-containing compounds with different bonding type. The results show that Cu-O bonds in high-Tc superconductors are a blend of covalent and ionic. The contribution of covalent bonding to Cu-O bonds is greater for high-Tc superconductors than for CuO. The average partial charge on oxygen (-δO) are calculated for a number of high-Tc superconductors. A correlation between Tc and -δO has been found, i.e. the Tc increases with decreasing –δO.
- High-T_c Superconductors,
- Chemical bonds,
- Atomic charge
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The Cu-O Bond Type and Partial Charge on Oxygen in High-Tc Superconductors

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The Cu-O Bond Type and Partial Charge on Oxygen in High-T_c Superconductors