ESTIMATION OF THE DOPING DEPENDENCE OF ANTIFERROMAGNETISM IN THE COPPER OXIDE MATERIAL
ESTIMATION OF THE DOPING DEPENDENCE OF ANTIFERROMAGNETISM IN THE COPPER OXIDE MATERIAL
Within the t-J model, we study the doping dependence of antiferromagnetism in the copper oxide materials by considering quantum fluctuations of spinons in the randomphase-approximation. The staggered magnetization vanishes around doping δ=5% for a reasonable parameter value t/J=5, which is in agreement with the experiments on copper oxide materials.