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Effect of the pseudogap on the uniform magnetic susceptibility of Y1-xCaxBa2Cu3O7-d

S. H. Naqib·J. R. Cooper
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Abstract

The effects of planar hole content, p, on the temperature-dependent uniform (q = 0) magnetic susceptibility, c(T), of polycrystalline Y1-xCaxBa2Cu3O7-d compounds with 0.0 </= x </= 0.20 were investigated over a wide range of oxygen deficiency (d). Systematic variations in c(T) were found with changing p. The characteristic pseudogap temperature scale, Eg(p)/kB, was extracted from the analysis of the c(T,p) data. We have found clear evidence that the pseudogap in the quasi-particle spectral weight appears abruptly at a planar hole content of p ~ 0.19, and that it grows rapidly with decreasing p.

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S. H. Naqib, J. R. Cooper. 2006-06-20. Effect of the pseudogap on the uniform magnetic susceptibility of Y1-xCaxBa2Cu3O7-d. https://doi.org/10.1016/j.physc.2007.03.168

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