Bg. Liu et al., EFFECTS OF NEXT-NEAREST-NEIGHBOR EXCHANGE ON THE MAGNETIC-PROPERTIES OF LAYERED ANTIFERROMAGNETS, Journal of magnetism and magnetic materials, 154(3), 1996, pp. 369-374
In this paper we study the effect of next-nearest-neighbor exchange on
antiferromagnetic order and spin correlation of quasi-two-dimensional
antiferromagnets in terms of our anisotropic nonlinear spin wave theo
ry. We emphasize the Neel temperature, antiferromagnetic order paramet
er, and spin correlation as functions of the next-nearest-neighbor exc
hange parameter. We apply the theoretical results to the antiferromagn
etic properties of insulating cuprates.