  Finite temperature quantum Monte Carlo simulations are performed on the
anisotropic t-J model and in particular on its Ising limit. Straight
site-centered stripes are imposed by an on-site potential representing external
mechanisms of stripe formation. In this model, we show that, even though charge
inhomogeneity exists at a high temperature, the anti-phase ordering of the spin
domains between stripes occurs at a much lower temperature. The magnetic
correlations at this spin ordering crossover are analyzed. The stripes show
metallicity, with absence of hole attraction. Comparison between this model and
others that have been proposed to explain or describe stripes, as well as
possible relations with experimental features on underdoped cuprates are
discussed.
