We explore the possibilities of designing classical logic gates at nano-scalelevel using magnetic quantum rings. A single ring is used for designing OR,NOT, XOR, XNOR and NAND gates, while AND and NOR gate responses are achievedusing two such rings and in all the cases each ring is threaded by a magneticflux $\phi$ which plays the central role in the logic gate operation. We adopta simple tight-binding Hamiltonian to describe the model where a magneticquantum ring is attached to two semi-infinite one-dimensional non-magneticelectrodes. Based on single particle Green's function formalism all thecalculations which describe two-terminal conductance and current through thequantum ring are performed numerically. The analysis may be helpful infabricating mesoscopic or nano-scale logic gates.
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