J. Phys. I France
Volume 3, Numéro 4, April 1993
|Page(s)||1043 - 1051|
J. Phys. I France 3 (1993) 1043-1051
Double layer Hubbard model : off-diagonal long range order in the nodeless d-wave channelI. Morgenstern, Th. Husslein, J. M. Singer and H.-G. Matuttis
Department of Physics, University of Regensburg, D-8400 Regensburg, Germany and HLRZ, c/o KFA Jülich, Postfach 1913, D-5170 Jülich, Germany
We report on a numerical study of the double layer Hubbard model describing the CuO 2 sheets in the high- oxides. For the simulation we employed the projector quantum Monte Carlo method (PQMC) to study the ground state properties of this correlated electron system. Our results provide evidence for off-diagonal long range order in the nodeless d-wave channel. The implications with respect to possible mechanisms for high- superconductivity in oxides in combination which phononic booster mechanisms are discussed.
© Les Editions de Physiques 1993