Abstract
New ideas for the high-temperature superconductors are discussed. Holes are assumed to be spin-½, charge quasiparticles strongly dressed by spin fluctuations. Calculating their dispersion, we claim that the van Hove singularities of the cuprates are caused by antiferromagnetic correlations. From the two carriers problem in the 2D model, an effective Hamiltonian for holes is defined. This effective model has superconductivity in the channel, K, an optimal hole density of about , and a quasiparticle lifetime linearly dependent with energy.
- Received 20 June 1994
DOI:https://doi.org/10.1103/PhysRevLett.74.310
©1995 American Physical Society