The effects of lattice anisotropies on the physics of copper oxide planes

The class of high Tc superconductors share one common structural aspect, the existence of planes of copper and oxygen ions. These planes are thought to be the source of the superconducting behaviour. They can be represented as a two-dimensional lattice of ions, which facilitates their study using numerical models. One such model is the t − J model. In most studies utilising numerical models, the planes have been considered isotropic. However, recent analysis of cuprate structure has illustrated that this may not be representative of the copper oxide planes. A number of cuprate structures exhibit different phases in which the planes are not isotropic, such as the low temperature orthorhombic and low temperature tetragonal phases. This work will examine the effects of introducing anisotropy into the t − J model in order to understand how these phases affect the results gained from numerical studies.

Authors

• Tipper, J. M.
• University of Lethbridge. Faculty of Arts and Science

• Copper oxide superconductors
• High temperature superconductivity
• Crystallography
• Anisotropy
• Dissertations, Academic

Identifier

hdl:10133/677

OAI identifier oai:identifier

oai:opus.uleth.ca:10133/677