Location, effect superconductivity

Fig. 13. Incommensurability, d, of the spin fluctuations in La2-.vSr Cu04 and related systems, plotted as a function of the effective doping level. The magnitude of the incommensuration scales in roughly the same way as the superconducting transition temperature with doping. From Yamada et al. (1998). Note that the notation used to describe the location of the peaks in this figure (and the original reference) differs Ifom that used in...

D-ACAR measurements (Mosley et al. 1994) have led to the identification of a Fermi surface in Bai j Kj Bi03. It is a cubic structure, centered around F, with rounded corners. Its location is in excellent agreement with that predicted by band-structure calculations. The observed large, parallel sheets of Fermi surface suggest the presence of effects due to Fermi surface nesting which may drive the superconducting state. 

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