Low-frequency magnetoconductivity measurements of two-dimensional surface electrons on liquid ⁴He under cyclotron resonance conditions are reported here. At relatively low-electron densities, the cyclotron-resonance-induced conductivity line shape is a phenomenological combination of two resonances, which can be separated by fitting. The resonance which shows a decrease of the effective scattering time τeff with increasing driving field is studied here: the observed shift of the resonance, the resonance linewidth and the effective scattering frequency. It is found that the extracted τeff has a similar electric driving field dependence as published experimental results from zero-magnetic field, dc time-of-flight measurements.
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Penning et al. (2000) studied this question.
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