Electronic Transmission and Switch Effect in k-Component Fibonacci Nanowires

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Abstract:

We present the electronic transport in the k-component Fibonacci (KCF) nanowires, in which k different incommensurate intervals are arranged according to a substitution rule. For the KCF nanowires with an identical k, by increasing the length of the nanowire, the minima in transmission extend gradually into the band gap over which the transmission is blocked. Meanwhile more transmission peaks appear. For finite KCF nanowire, by increasing the number of different incommensurate intervals k, the width of electronic band gap is enlarged. Moreover, when the value of k is sufficiently large, the transmission is shut off, except at a few resonant energies. These properties make it possible to use the KCF nanowires as switching devices. Furthermore, a dimensional spectrum of singularities associated with the transmission spectrum demonstrates that the electronic propagation in the KCF nanowire shows multifractality. These investigations open a unique way to control quantum transport in nanodevices.

Keywords: DIMENSIONAL SPECTRUM; ELECTRONIC TRANSMISSION; MULTIFRACTAL; QUASIPERIODIC NANOWIRES; SWITCH EFFECT

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2937

Publication date: November 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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