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- W2034454996 abstract "We explore AND gate response in a double quantum ring where each ring is threaded by a magnetic flux ϕ. The double quantum ring is attached symmetrically to two semi-infinite one-dimensional metallic electrodes and two gate voltages, namely, Va and Vb, are applied, respectively, in the lower arms of the two rings which are treated as two inputs of the AND gate. The system is described in the tight-binding framework and the calculations are done using the Green's function formalism. Here we numerically compute the conductance–energy and current–voltage characteristics as functions of the ring-to-electrode coupling strengths, magnetic flux and gate voltages. Our study suggests that, for a typical value of the magnetic flux ϕ=ϕ0/2 (ϕ0=ch/e, the elementary flux-quantum) a high output current (1) (in the logical sense) appears only if both the two inputs to the gate are high (1), while if neither or only one input to the gate is high (1), a low output current (0) results. It clearly demonstrates the AND gate behavior and this aspect may be utilized in designing an electronic logic gate." @default.
- W2034454996 created "2016-06-24" @default.
- W2034454996 creator A5060591485 @default.
- W2034454996 date "2009-12-01" @default.
- W2034454996 modified "2023-09-23" @default.
- W2034454996 title "Electron transport in a double quantum ring: Evidence of an AND gate" @default.
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- W2034454996 doi "https://doi.org/10.1016/j.physleta.2009.10.002" @default.
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