Formation of an edge striped phase in the nu=1/3 fractional quantum Hall system - art. no. 165311

We have performed an exact diagonalization study of up to N = 12 interactin g electrons on a disk at filling nu = 1/3 for both true Coulomb interaction , and the V-1, Haldane short-range interaction for which Laughlin wave func tion is the exact solution. For the Coulomb interaction and N greater than or equal to 10 we find persistent radial oscillations in electron density, which are not captured by the Laughlin wave function. Our results strongly suggest formation of a chiral striped phase at the edge of the fractional q uantum Hall systems. The amplitude of the charge density oscillations decay s slowly, only as a power law with the distance from the edge. Thus the spe ctrum of edge excitations is likely to be affected.