Despite it being almost 40 years since the discovery of the high-Tc superconducting cuprates, the underlying mechanisms governing their superconductivity are still not fully understood. Here, the authors use Green’s function strong-coupling lattice quantum Monte Carlo perturbation theory to investigate the spectral as well as superconducting properties of the doped t-t’ Hubbard model and consider the origin of the two-gap structure observed in the cuprates.
- Evgeny A. Stepanov
- Sergei Iskakov
- Alexander I. Lichtenstein