UK superconductivity

superconductivity ∗

We present a 2+1-dimensional lattice model for the copper oxide superconductors and their parent compounds, in which both the charge and spin degrees of freedom are treated dynamically. The spin-charge coupling parameter is associated to the doping fraction in the cuprates. The model is able to account for the various phases of the cuprates and their properties, not only at low and intermediate...

Superconductivity: Microscopics

For repulsive interactions the properties of an interacting Fermi system are not qualitatively different from the noninteracting system: the quantitative values of parameters are modified as described by Fermi liquid theory. Attractive interactions however, no matter how weak, lead to an entirely new state of superconductivity. It took almost 50 years from the discovery by Kammerlingh-Onnes in ...

Superconductivity: Thermodynamics

Art and Design Education in the UK

This paper seeks to identify the philosophical origins of the teaching of art and design and subsequently trace its incorporation into a teaching program in the UK. It briefly discusses the nature of its classical ‘drawing’ background and the conflicts in the debate as to what ‘design’ means. It then goes on to identify the cultural and political context which shaped the institutions, such as A...

Superconductivity and Electric Fields: a Relativistic Extension of Bcs Superconductivity

The effects of static electric fields on the superconducting state are studied within a relativistic extension of the BCS theory of superconductivity.