Abstract
We propose and fabricate a 1-bit adder circuit having only two single electron transistors (SETs) for AND and XOR logic operations by using SA-MOVPE. Two SETs have two common input gates and different Coulomb oscillation periods. The logic operation can be achieved on the basis of a binary decision diagram (BDD) architecture using Coulomb blockade (CB) in GaAs dots. We also demonstrate Coulomb oscillations caused by input gate voltages for a SET. Oscillation features of two input gates are the same and their phases can be shifted by the control gate. [DOI: 10.1380/ejssnt.2006.180]
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