Journal ArticleDOI
Critical wave functions and a Cantor-set spectrum of a one-dimensional quasicrystal model
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The electronic properties of a tight-binding model which possesses two types of hopping matrix element arranged in a Fibonacci sequence are studied and the fractal dimensions f(ae) represents the global scaling properties of the Cantor-set spectrum.Abstract:
The electronic properties of a tight-binding model which possesses two types of hopping matrix element (or on-site energy) arranged in a Fibonacci sequence are studied. The wave functions are either self-similar (fractal) or chaotic and show ``critical'' (or ``exotic'') behavior. Scaling analysis for the self-similar wave functions at the center of the band and also at the edge of the band is performed. The energy spectrum is a Cantor set with zero Lebesque measure. The density of states is singularly concentrated with an index ${\ensuremath{\alpha}}_{E}$ which takes a value in the range [${\ensuremath{\alpha}}_{E}^{\mathrm{min}}$,${\ensuremath{\alpha}}_{E}^{\mathrm{max}}$]. The fractal dimensions f(${\ensuremath{\alpha}}_{E}$) of these singularities in the Cantor set are calculated. This function f(${\ensuremath{\alpha}}_{E}$) represents the global scaling properties of the Cantor-set spectrum.read more
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Localization: theory and experiment
B Kramer,A MacKinnon +1 more
TL;DR: The transport properties of disordered solids have been the subject of much work since at least the 1950s, but with a new burst of activity during the 1980s which has survived up to the present day as mentioned in this paper.
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Wave transmission in nonlinear lattices
D. Hennig,G.P. Tsironis +1 more
TL;DR: In this paper, wave transmission properties in one dimensional nonlinear lattices are discussed and the results from the theory of dynamical systems are used to investigate various aspects of wave transmission and wave localization.
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The role of aperiodic order in science and technology
TL;DR: The role of aperiodic order in different domains of science and technology from an interdisciplinary approach is discussed in this paper, where several conceptual links between quasiperiodic crystals and the hierarchical structure of biopolymers are discussed.
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Theory of elementary excitations in quasiperiodic structures
TL;DR: A comprehensive and up-to-date review of the main physical properties (such as energy profiles, localization, scale laws, multifractal analysis, transmission spectra, transmission fingerprints, electronic structures, magnetization curves and thermodynamic properties) of the elementary excitations that can propagate in multilayered structures with constituents arranged in a quasiperiodic fashion is presented in this article.
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Electronic properties of quasicrystals an experimental review
TL;DR: In this paper, the electronic properties of a large number of icosahedral-crystal systems have been studied experimentally, and the importance of sample quality to the exposition of intrinsic properties is emphasized, particularly for systems with high resistivities.