2 research outputs found
Electron transport in a quasi-one dimensional channel on suspended helium films
Quasi-one dimensional electron systems have been created using a suspended
helium film on a structured substrate. The electron mobility along the channel
is calculated by taking into account the essential scattering processes of
electrons by helium atoms in the vapor phase, ripplons, and surface defects of
the film substrate. It is shown that the last scattering mechanism may dominate
the electron mobility in the low temperature limit changing drastically the
temperature dependence of the mobility in comparison with that controlled by
the electron-ripplon scattering.Comment: 4 pages, 1 figur
Magnetoresistance of nondegenerate quantum electron channels formed on the surface of superfluid helium
Transport properties of quasi-one-dimensional nondegenerate quantum wires
formed on the surface of liquid helium in the presence of a normal magnetic
field are studied using the momentum balance equation method and the memory
function formalism. The interaction with both kinds of scatterers available
(vapor atoms and capillary wave quanta) is considered. We show that unlike
classical wires, quantum nondegenerate channels exhibit strong
magnetoresistance which increases with lowering the temperature.Comment: 8 pages, 7 figure