Properties of the pseudogap phase in high-Tc superconductors
A. A. Abrikosov
DOI 10.1103/PhysRevB.64.104521 · Physical Review B
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Abstract
Several physical properties of the pseudogap phase are calculated on the basis of the spatially inhomogenous Franz-Millis model of superconducting fluctuations, consisting of small superconducting domains with uncorrelated supercurrents. The variation of this domain structure with time is supposed to be slow. A distribution function of superfluid velocities is found based on the assumption of the dominant role of extended saddle point singularities (“hot spots”). The model is used for calculation of the spectral function, the inelastic neutron scattering cross section, and the spin susceptibility entering the Knight shift. In all cases the calculated curves are qualitatively close to experimental results.
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