Abstract
We present an exhaustive study on tunneling and electrical conduction in an electrically biasedGaAs–AlyGa1−yAs generalized Fibonacci superlattice. The study is based on transfer matrix formalism usingan Airy function approach and provides an exact calculation of the current density in thecase of quasi-periodic multibarrier systems. The results suggest the use of suchquasi-periodic systems in perfect band-pass or band-eliminator (of extremely low width)circuitry. We have clearly demonstrated the resonance-type peaks and negativedifferential conductivity regimes in such systems. It has also been found thatquasi-periodicity favors sharp negative differential conductivity peaks compared to those inperiodic superlattices and thus have profound importance in device applications.
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