Correlated band structure and the ground-state phase diagram in high-Tc cuprates
arXiv:cond-mat/0506364 · doi:10.1016/j.physb.2006.01.139
Abstract
We review results obtained with a recently proposed variational cluster approach (VCA) for the competition between d-wave superconductivity (dSC) and antiferromagnetism (AF) in the high-Tc cuprates. Comparing the single-particle spectra of a two-dimensional Hubbard model with quantum Monte-Carlo (QMC) and experimental data, we verify that the VCA correctly treats the low-energy excitations. The cluster calculations reproduce the overall ground-state phase diagram of the high-temperature superconductors both for electron- and hole-doping. In particular, they include salient features such as the enhanced robustness of the AF state in case of electron doping. For electron- but also for hole-doping, we clearly identify a tendency to phase separation into a mixed AF-dSC phase at low and a pure dSC-phase at high doping.
arXiv comment4 pages, 3 figures, submitted to the SCES'05
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Cited by in corpus (3)
- Pseudogap and high-temperature superconductivity from weak to strong coupling. Towards quantitative theory
- Antiferromagnetic to superconducting phase transition in the hole- and electron-doped Hubbard model at zero temperature
- Quantum Monte Carlo Study of Strongly Correlated Electrons: Cellular Dynamical Mean-Field Theory