σ_xy = (p/q) e²/h at rational fillings ν = 1/3, 2/5...; Laughlin wavefunction; anyonic quasi-particles with fractional charge/statistics.
σ_xy = (p/q) e²/h at rational fillings ν = 1/3, 2/5...; Laughlin wavefunction; anyonic quasi-particles with fractional charge/statistics.