Electron transport in a quantum interferometer

Electron transport properties of a quantum interferometer are studied based on the Green’s function formalism. The interferometer is symmetrically attached to two one-dimensional metallic electrodes, viz, source and drain, and here we adopt a simple tight-binding model to describe the bridge system. In this article we address numerically the conductance-energy and current-voltage characteristics as functions of the interferometer-to-electrodes coupling strength, magnetic fluxes threaded by the left and right subrings of the interferometer and the difference of these two fluxes. Our study provides several interesting features of electron transport across the interferometer, and these aspects may be utilized in designing nanoelectronic devices. PACS No.: 73.23.-b; 73.63.Rt.