Mj. Lercher et Jm. Wheatley, MAGNETIC-PROPERTIES OF SINGLE-LAYERED CU-OXIDES IN THE EXTENDED T-J MODEL, Physica. C, Superconductivity, 215(1-2), 1993, pp. 145-151
A detailed comparison of the magnetic phase diagram of the single laye
r cuprate materials La2-xSr2CuO4 and Tl2Ba2CuO6+x is made within the u
niform metallic state of the extended t-J model. La2-xSr2CuO4 is chara
cterised by strong anti-ferromagnetic correlations with the mean field
anti-ferromagnetic transition persisting to a doping level approximat
ely 0.2. We obtain semi-quantitative agreement with experiment outside
this region. The model fails to describe the experimental trends in T
l2Ba2CuO6+x, despite the fact that this material is far from the anti-
ferromagnetic phase boundary. Implications of these results are discus
sed.