Resonant tunneling through coupled, double-quantum-box nanostructures

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Abstract
We present calculations of resonant tunneling through coupled, double-quantum-box (CDQB) nano- structures. Resonant tunneling through states confined in individual boxes and resonant tunneling through CDQB states, resonantly coupled between the two boxes, are both important tunneling channels. For weakly coupled boxes separated by a thick barrier, the dominant tunneling channels are the CDQB states. For strongly coupled boxes separated by a thin barrier, CDQB states and individual box states both provide effective tunneling channels. Our results suggest that recent measurements of resonant tunneling in strongly coupled, double-quantum-box nanostructures can be explained as tunneling through states in the box adjacent to the emitter contact.