Abstract
Using the Hubbard model Hamiltonian we study spin-fluctuation exchange-induced superconductivity of d-wave symmetry. Results are presented for the characteristic temperature at which a gap appears in the spectral density, for at which Cooper-pairs are formed, for at which Cooper pairs become phase coherent, and for the superfluid density We find that, with increasing doping, for the phase coherence energy becomes larger than the Cooper-pair condensation energy. Accordingly, one has for and for the overdoped cuprates. We use our results to discuss dynamics and recent dynamical conductivity and ultrafast nonequilibrium measurements.
- Received 8 March 2001
DOI:https://doi.org/10.1103/PhysRevB.64.144520
©2001 American Physical Society