DOPED PLANAR QUANTUM ANTIFERROMAGNETS WITH STRIPED PHASES

We study the properties of the striped phases that have been proposed for the doped cuprate planar quantum antiferromagnets. We invoke an ef fective, spatially anisotropic, nonlinear sigma model in two space dim ensions. Out theoretical predictions are in quantitative agreement wit h recent experiments. We focus on (i) the staggered magnetization at T = 0 and (ii) the Neel temperature as functions of doping; these have been measured recently in La2-xSrxCuO4 with 0 less than or equal to x less than or equal to 0.018. Good agreement with experiment is obtaine d using parameters determined previously and independently for this sy stem. These results support the proposal that the low doping (antiferr omagnetic) phase of the cuprates has a striped configuration.