c-axis transport in the bilayer t-J model

As high-T-c superconductors show strong anisotropy in their transport prope rties, a detailed analysis of the interlayer coupling seems to be quite imp ortant. To gain further insight into this problem we study the bilayer t-J model within the dynamical mean-field theory. We present results for the ba ndstructure and the optical conductivity, which show that charge fluctuatio ns between the layers are reduced by the strong correlations. Moreover, the re is an even stronger suppression by the antiferromagnetic order. (C) 1999 Elsevier Science B.V. All rights reserved.