J. Phys. I France 3 (1993) 83-92
Magnetism and high superconductorsChris Bowen1, D. L. Hunter1, R. Blumenfeld2 and Naeem Jan1
1 Physics Department, St Francis Xavier University, Antigonish, Nova Scotia, Canada B2G 1C0
2 Cavendish Laboratory, Cambridge University, Madingley Road, Cambridge, CB3 0HE, England
(Received 27 July 1992, accepted in final form 1 September 1992)
The magnetic properties of the copper oxide planes in hight Tc superconductors are represented by a planar 2-d antiferromagnet on a square lattice. We model the magnetic effect of the addition of holes through doping by the replacement of antiferromagnetic with ferromagnetic plaquettes thereby facilitating the creation of vortices/antivortices. These magnetic arrangements lead to pair formation of the holes (Cooper pairs) at low temperatures. We explore some of the consequences of these results for high Tc superconductors.
74.20 - 75.10
© Les Editions de Physique 1993