A Single-Molecule Digital Full Adder

Identifier:  imarina:9228584

Handle: https://hdl.handle.net/20.500.11797/imarina9228584

Authors:  Soe, WH; De Mendoza, P; Echavarren, AM; Joachim, C

Abstract:
A specifically designed aza-starphene molecule is presented where contacting one, two, and/or three single Al adatoms allows this molecule to function as a "3-inputs & 2-outputs" digital full adder on a Au(111) surface. Sequentially positioning single Al adatoms with atomic precision to interact with aza-starphene, inputs one classical digit per Al, which is converted to quantum information by the molecule. The intramolecular logical calculations do not require a solid-state digital full adder cascade-like architecture. The measured Boolean truth table results in part from the quantum level repulsion effect and in part from a nonlinear magnetic effect also intrinsic to the aza-starphene molecule with its contacted Al adatoms.