Analysis of multiphase clocked electron pumps consisting of single-electron transistors

摘要

Pump circuits consisting of single-electron transistors are analyzed in which electrons are pumped by multiphase clock pulses. An optimal low-temperature operation condition is presented where pumped current is maximized, yet the power consumption is not. Approximate formulas for the number of electrons transferred per clock cycle and the power consumption are derived for that condition, which clearly show the advantage of the pump circuits for low-power applications. The power consumption becomes even less at higher temperatures. However, the relatively large island capacitance between transistors limits the operation temperature. (C) 2001 American Institute of Physics. References: 20