The Quantum Chemistry View of High Temperature Superconductors.
William A. Goddard III
Abstract
This chapter focuses on the hole doped cuprates, with superconducting transition temperatures of Tc = 35 to 125 K. The goal is to understand the superconducting properties in terms of the electronic state and structure of these materials so that one can reason about how to modify the pertinent materials to improve properties. All systems of the hole doped cuprates and of the electron doped systems involve doped two-dimensional Cu-O2 sheets. The chapter considers the properties of the undoped sheets. The high Tc superconductors all involve oxidation. In addition to making the cuprate a conductor, the holes on the oxygens also couple with the spins on the Cus to modify the magnon spectrum. The reason is that the Op hole has a spin which couples to the spins of the two adjacent copper ions. The chapter considers just the three spin problem such as, C˙u-O˙-C˙u.
Group Members
III, W. A. G. (2021). The Quantum Chemistry View of High Temperature Superconductors.. *Proceedings of the 39th Scottish Universities Summer School in Physics - Igh Temp. Supercond. 351–392 (1991)*. https://doi.org/10.1201/9781003209621-11