A remark on the decay of superconducting correlations in one- and two-dimensional hubbard models
โ Scribed by Nicolas Macris; Jean Ruiz
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 227 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0022-4715
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
As a model of the novel superconductor Na x CoO 2 AE yH 2 O, we study a triangular Hubbard model with doubly degenerate atomic orbitals, using an optimization variational Monte Carlo method. It is found that when the isolated Fermi surface overlaps the van Hove singularity points, d x 2 รy 2 and d +
The two-dimensional Hubbard model is studied by means of the composite operator approach. In a generalized mean-field approximation we calculate local quantities, as the double occupancy and the magnetic moment, for various values of the particle density, repulsive Coulomb interaction and temperatur