Density Matrix Renormalization Group Study of the Striped Phase in the 2Dt−JModel

Using the density matrix renormalization group, we study the 2D $t-J$ model at a hole doping of $x=\frac{1}{8}$ on clusters as large as $19\times 8$. We find a striped phase consistent with recent neutron scattering experiments. We find that bond-centered and site-centered stripes have nearly the same energy, suggesting that in the absence of pinning effects the domain walls can fluctuate.