Theory of one-dimensional double-barrier quantum pump in two-frequency signal regimeM. M. Mahmoodian and M. V. Entin
Institute of Semiconductor Physics, Siberian Division, Russian Academy of Sciences - Novosibirsk, 630090 Russia
received 8 December 2006; accepted in final form 2 February 2007; published March 2007
published online 2 March 2007
A one-dimensional quantum pump with oscillating double -like barriers/wells is studied. We assume that the oscillations contain two frequencies and . The alternating signal leads to the direct current across the structure even in a symmetric system. The properties of this quantum pump are studied in a wide range of the system parameters.
73.23.-b - Electronic transport in mesoscopic systems.
73.50.Pz - Photoconduction and photovoltaic effects.
85.35.Be - Quantum well devices (quantum dots, quantum wires, etc.).
© Europhysics Letters Association 2007