Fractionally charged impurity states of a fractional quantum Hall system
Fractionally charged impurity states of a fractional quantum Hall system
The single-particle spectral function for an incompressible fractional quantum Hall state in the presence of a scalar short-ranged attractive impurity potential is calculated via exact diagonalization within the spherical geometry. In contrast to the noninteracting case, where only a single bound state below the lowest Landau level forms, electron-electron interactions …