Fractional quantum Hall states in two-dimensional electron systems with anisotropic interactions
Fractional quantum Hall states in two-dimensional electron systems with anisotropic interactions
We study the anisotropic effect of the Coulomb interaction on a 1/3-filling fractional quantum Hall system by using an exact diagonalization method on small systems in torus geometry. For weak anisotropy the system remains to be an incompressible quantum liquid, although anisotropy manifests itself in density correlation functions and excitation …