Pseudogap and Spin Fluctuations in the Normal State of Electron-Doped Cuprates
Abstract
The normal state of electron-doped cuprates near optimal doping is studied within the two particle self-consistent approach, using the t-t'-t''-U Hubbard model. We show that the pseudogap observed in recent photoemission experiments as well as the large antiferromagnetic correlation length found in recent neutron scattering measurements are closely related and are well explained by this approach. Long-range Neel order is not necessary for the photoemission pseudogap. The pseudogap temperature, also observed in optical experiments, coincides with the temperature at which the antiferromagnetic correlation length becomes larger than the thermal de Broglie wavelength.Keywords
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