North Carolina Central University,
Keywords: resonance, resonant, tunneling, quantum rings
Summary:In the present work, the phenomenon known as resonance tunneling due to the presents of a magnetic field perpendicular to the surface of double concentric rings (DCQR) is presented. It has shown that in the weakly coupled DCQR, that has been placed in transverse magnetic field, the electron spatial transition between the rings can occur due to electron level anti-crossing. Resonance tunneling in nano-structures has been of great interest see for example . The ratio of these currents was determined, and the resonance energy and corresponding magnetic field strength were calculated. It will be shown that there are two types current peak: one is associate with anti-crossing and the other is true current resonance. Such results will be useful in cryptography, optics, and quantum computing.