Abstract
Very low frequency edge magnetoplasmons (EMP's) for electrons on liquid helium are investigated in the nonresonant regime from current-voltage phase shift measurements for temperatures of 1.57 K and 1.93 K. At these temperatures the mobilities, and therefore the zero field phase shifts, differ by about a factor of three. The phase shift in the EMP regime is the same within 10 %. This confirms the theoretically predicted temperature independence of the EMP dispersion.
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