2016
DOI: 10.1103/physrevb.94.214204
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Conduction in quasiperiodic and quasirandom lattices: Fibonacci, Riemann, and Anderson models

Abstract: We study the ground state conduction properties of noninteracting electrons in aperiodic but non-random one-dimensional models with chiral symmetry, and make comparisons against Anderson models with non-deterministic disorder. The first model we consider is the Fibonacci lattice, which is a paradigmatic model of quasicrystals; the second is the Riemann lattice, which we define inspired by Dyson's proposal on the possible connection between the Riemann hypothesis and a suitably defined quasicrystal. Our analysi… Show more

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Cited by 15 publications
(18 citation statements)
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References 67 publications
(116 reference statements)
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“…These systems, often called quasicrystals, are known to possess highly non-trivial singular continuous spectra with fractal structure [18], which leads to the appearance of critical states [19,20] which are neither extended nor localized. These unique spectral features can in fact induce localization and anomalous transport without the presence of interactions [21][22][23][24][25][26][27]. Perhaps the most celebrated example is the Aubry-André-Harper (AAH) model [28,29] which displays a transition from a completely delocalized to a completely localized phase at a finite potential strength.…”
Section: Introductionmentioning
confidence: 99%
“…These systems, often called quasicrystals, are known to possess highly non-trivial singular continuous spectra with fractal structure [18], which leads to the appearance of critical states [19,20] which are neither extended nor localized. These unique spectral features can in fact induce localization and anomalous transport without the presence of interactions [21][22][23][24][25][26][27]. Perhaps the most celebrated example is the Aubry-André-Harper (AAH) model [28,29] which displays a transition from a completely delocalized to a completely localized phase at a finite potential strength.…”
Section: Introductionmentioning
confidence: 99%
“…Por isso, abrimos mão dele e introduziremos o chamado método de projeções. 2,9,51 Primeiro, construímos uma rede quadrada rotacionada de um ângulo θ = tan −1 (g). Para isso podemos utilizar as seguintes coordenadas para os pontos…”
Section: Cadeia Fibonacciunclassified
“…Na cadeia de Fibonacci, por exemplo, o modelo Tight-Binding foi usado para simular as propriedades eletrônicas dos estados eletrônicos e mostram que o espectro de partícula única desse sistema possui um grande número de gaps dentro da banda. [27][28][29] Além disso, suas funções de onda exibem comportamento multifractal 32 e apresentam estados críticos, 9,52 que não são estendidas como em cristais periódicos, nem localizadas como em materiais desordenados, definidos em analogia àqueles encontrados na transição metal-isolante de Anderson. 53,54 Nos quase cristais bidimensionais mostramos, no Capítulo 2 que a coordenação é variável em todo espaço.…”
Section: Propriedades Eletrônicas Do Quase Cristal Octogonalunclassified
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