Band-coupling effect on the frequency limit of resonant-tunneling diodes

The effect of the band-coupling between the conduction and valence bands on the frequency limit of resonant tunneling oscillators is studied. An analytical two-band sequential tunneling model based on the dot vector product of k and p is presented. For a conventional double-barrier resonant tunneling diode, the results are compared with that of the one-band sequential tunneling model. It is shown that, by taking into account the band-coupling effect, the frequency limit could be many times greater than that predicted by the one-band model.<
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