Quantum Hall stripe phases at integer Þlling factors

We consider stripe formation in quantum Hall (QH) systems at integer Þlling factors. We use HartreeÐFock calculations to obtain the phase diagram of bilayer QH systems at n 4N 1 in a tilted magnetic Þeld. We derive and analyze an effective low energy theory for the stripe phases, which may be present in such systems. We discuss the possibility of stripe formation in wide well systems in a tilted magnetic Þeld and suggest that the resistance anisotropy, observed recently by Pan et al. [Phys. Rev.