Localization of carriers in a one-dimensional electron system over liquid helium

The mobility of carriers in a one-dimensional electron system over liquid h elium has been measured at the temperature 0.5-1.7 K and for different valu es of linear electron density. Profiled nylon substrates with some quantity of charge deposited were used for the realization of a one-dimensional ele ctron system. It is shown that electron mobility is dependent on the quanti ty of the charge on a substrate. Effects observed are explained by the loca lization of electrons moving in the random potential created by the substra tes charge. It is supposed that at low temperatures the movement of carrier s is determined by quantum effects. (C) 2000 Elsevier Science B.V. All righ ts reserved.