Abstract
We have performed an exact diagonalization study of up to interacting electrons on a disk at filling for both true Coulomb interaction, and the Haldane short-range interaction for which Laughlin wave function is the exact solution. For the Coulomb interaction and 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 quantum Hall systems. The amplitude of the charge density oscillations decays slowly, only as a power law with the distance from the edge. Thus the spectrum of edge excitations is likely to be affected.
- Received 26 December 2000
DOI:https://doi.org/10.1103/PhysRevB.64.165311
©2001 American Physical Society