58 citations · 550 across the 47 of their papers we have counts for
7 papers · 1 filter
Phase Separation and Superconductivity in the Copper Oxide Chain
C. Vermeulen, W. Barford, E. R. Gagliano
The phase diagram of the copper-oxide chain as a function of density and the nearest-neighbour Coulomb interaction, V, is determined. Phase separation takes place above a critical…
Strong Coupling Descriptions of High Temperature Superconductors: Electronic Attraction from a Repulsive Potential
W. Barford, M. W. Long
We consider the effect of the nearest neighbour copper-oxygen repulsion, V, when coupled to the charge transfer resonances Cu2+ to Cu3+ and Cu2+ to Cu+ in the high temperature cupr…
Large Phase Separation and Superconductivity in the Copper Oxide Chain
C. Vermeulen, W. Barford, E. R. Gagliano
The phase diagram of the copper-oxide chain as a function of density and the nearest-neighbour Coulomb interaction, V, is determined. Phase separation takes place above a critical…
The Dynamics of the Bean Critical State
W. Barford, W. H. Beere, M. Steer
A simple one dimensional model to simulate the establishment of the Bean critical state is introduced. It is shown that the dynamics of the flux lines as they enter the superconduc…
Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet
W. Barford, S. Jadhav
The Schwinger Boson mean field theories of the `t-J' model are extended by the consideration of anisotropic order parameters. This has two effects. First, a collinear phase, in whi…
Charge Transfer Excitons and the Metal-Insulator Transition in the High Temperature Superconductors
C. Vermeulen, W. Barford, E. R. Gagliano
The effects of the nearest neighbour Coulomb repulsion, V, are considered in the one dimensional copper-oxide chain using the modified Lanczos method. Above a critical value of V w…
The Abrikosov Flux Lattice in Planar Crystals of YBaCuO
M Harrison, W Barford
Anisotropic London Theory is used to predict the Abriskosv flux lattice in planar crystals of YBaCuO. By taking into account the orientation of the flux lattice as a function of ap…