Enhanced Rectification Efficiency In Cascaded Ballistic GaAs/AlGaAs Rectifiers.

We report on an enhanced efficiency of inertial-ballistic rectification in a cascade of rectifier stages. Each rectifier stage is composed of a pair of current injecting branches which oppositely merge into a central voltage stem. The voltages obtained at both ends of the stem enable to separate inertial-ballistic and mode-controlled rectification. In a cascade composed of two rectifier stages the total inertial-ballistic signal is enhanced compared to the single contributions while the mode-controlled signal is almost unaffected. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]