Structural features of cuprate superconductors

Cu-O bonds are under compression as in the T structure, while electrons can be doped when the Cu-O bonds are under tension as in the T structure. 

The nature of the charge reservoirs in the cuprates determines the carrier concentration and the ease of charge-transfer to the CUO2 sheets. Covalent charge reservoirs can 

Oxygen stoichiometry and ordering play a crucial role in determining the structure and properties of cuprates. The dependence of the structure and properties of YBa2Cu307 g on oxygen content has been studied in detail. Thus, YBa2Cu307 g which is orthorhombic (c 3 b) with a of 90 K when 0.0 b 0.25, assumes another orthorhombic structure (c 7 3b) when 0.3 b 0.4 with a of 50-60 K (Fig. 

Many of the cuprate families have an antiferromagnetic insulator member at one end 

As mentioned earlier, a majority of the cuprates have holes as charge carriers. These 

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