14
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      NAND gate response in a mesoscopic ring: An exact study

      Preprint

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          NAND gate response in a mesoscopic ring threaded with a magnetic flux \(\phi\) is investigated by using Green's function formalism. The ring is attached symmetrically to two semi-infinite one-dimensional metallic electrodes and two gate voltages, namely, \(V_a\) and \(V_b\), are applied in one arm of the ring those are treated as the two inputs of the NAND gate. We use a simple tight-binding model to describe the system and numerically compute the conductance-energy and current-voltage characteristics as functions of the gate voltages, ring-to-electrode coupling strength and magnetic flux. Our theoretical study shows that, for \(\phi=\phi_0/2\) (\(\phi_0=ch/e\), the elementary flux-quantum) a high output current (1) (in the logical sense) appears if one or both the inputs to the gate are low (0), while if both the inputs to the gate are high (1), a low output current (0) appears. It clearly exhibits the NAND gate behavior and this feature may be utilized in designing an electronic logic gate.

          Related collections

          Author and article information

          Journal
          10 November 2009
          Article
          10.1088/0031-8949/80/05/055704
          0911.1905
          819446be-5837-456e-96f0-aca098d13cd0

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          Physica Scripta, Volume 80, Number 5, November 2009, pp. 055704 (6pp)
          8 pages, 5 figures
          cond-mat.mes-hall cond-mat.mtrl-sci

          Comments

          Comment on this article