Coherent Resonant Tunneling Model in Double-Barrier Nanostructures

We propose a coherent resonant tunneling model in double-barrier nanostructures in which besides an interference effect originated from coherent tunneling of single electron through two barriers, the effects of one-electron charging, discrete energy spectrum and electron interactions between barriers are also important. The interference effect, like that for light in Fabry-Perot cavity, will occur no matter whether a magnetic field exists or not, and is shown to have significant effect on the systems' tunneling current. Our model agrees surprisingly well with all the main experimental features of the phenomenon discovered by Scott Thomas et al.