Antiferromagnetism and superconductivity

摘要

In all copper oxide superconductors the undoped parent compounds show antiferromagnetism in the CuO2 planes. In this paper, antiferromagnetic spin fluctuations are modified through localized Jahn-Teller coupling which leads to a strong reduction in the Coulomb, repulsion and induces superconductivity with increased doping. An isotope experiment on the Neel temperature is proposed, which could eventually uniquely substantiate the proposed model.