Electronic energy spectra of square and cubic Fibonacci quasicrystals

S. Even Dar Mandel, R. Lifshitz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Understanding the electronic properties of quasicrystals, in particular the dependence of these properties on dimension, is among the interesting open problems in the field of quasicrystals. We investigate an off-diagonal tight-binding hamiltonian on the separable square and cubic Fibonacci quasicrystals. We use the well-studied Cantor-like energy spectrum of the one-dimensional Fibonacci quasicrystal to obtain exact results regarding the transitions between different spectral behaviours of the square and cubic quasicrystals. We use analytical results for the addition of one-dimensional spectra to obtain bounds on the range in which the higher-dimensional spectra contain an interval as a component. We also perform a direct numerical study of the spectra, obtaining good results for the square Fibonacci quasicrystal, and rough estimates for the cubic Fibonacci quasicrystal.

Original languageEnglish
Pages (from-to)2261-2273
Number of pages13
JournalPhilosophical Magazine
Volume88
Issue number13-15
DOIs
StatePublished - May 2008

Keywords

  • Electronic spectra
  • Electronic transport
  • Fibonacci quasicrystals
  • Quasicrystals

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