Properties of high-T$_C$ copper oxides from the nearly-free electron model

Details Properties of high-T$_C$ copper oxides from the nearly-free electron model Properties of high-T$_C$ copper oxides from the nearly-free electron model

2007-07-12

arxiv.org/abs/0707.1804v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures, 1 table

Scientific paper

10.1103/PhysRevB.76.140504

The generic band structure of high-T$_C$ copper oxides is simulated by the nearly free-electron model (NFE) in two dimensions (2-D) with parameters from band calculations. Interaction between phonons and spin waves will cause potential modulations and pseudogaps, and the strength of the modulations, the wave lengths and the doping, are all related. A Fermi-surface "arc" is found for dynamic spin/phonon waves. The confinement of superconductivity between two limiting dopings can be a result of competition with the pseudogap at low doping and weak coupling at high doping.

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