Dephasing of Electrons on Helium by Collisions with Gas Atoms
D. Herman, H. Mathur, A. J. Dahm
Abstract
The damping of quantum effects in the transport properties of electrons deposited on a surface of liquid helium is studied. It is found that due to vertical motion of the helium vapour atoms the interference of paths of duration t is damped by a factor - (t/τv)3. An expression is derived for the weak-localization lineshape in the case that damping occurs by a combination of processes with this type of cubic exponential damping and processes with a simple exponential damping factor.
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