The Laughlin-Haldane prediction that the charge e* of quasiparticles excited across the energy gap of fractional quantum Hall-effect ground states at {ν}=p/q is e*=±{}e/q, a new fundamental quantum of nature, is found to be consistent with experiment. The experimental probe of e* is σₓₓᶜ, obtained from the extrapolated 1/T=0 intercept of the activated region of the Arrhenius plot, which is shown to be constant for p/q fractions of the same q and scale as 1/q² for q=3, 5, 7, and 9.
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Clark et al. (1988) studied this question.