Abstract
A new friction mechanism in nanoelectromechanical systems is proposed. A model comprising of a movable quantum dot, located in an electric field, and a tunnel connected with an electron reservoir, maintained at a constant temperature, is considered. The method of kinetic equations in the framework of perturbation theory for the parameter of the ratio of the level width to the temperature is used to show that internal friction with non-monotonic temperature dependence arises in the system. The possibility of applying this result to find the instability region in shuttle systems is discussed.
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