Critical wave functions and a Cantor-set spectrum of a one-dimensional quasicrystal model
- 15 January 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 35 (3), 1020-1033
- https://doi.org/10.1103/physrevb.35.1020
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 which takes a value in the range [,]. The fractal dimensions f() of these singularities in the Cantor set are calculated. This function f() represents the global scaling properties of the Cantor-set spectrum.
Keywords
This publication has 29 references indexed in Scilit:
- Electronic and vibrational spectra of two-dimensional quasicrystalsPhysical Review B, 1986
- Density of states for a two-dimensional Penrose lattice: Evidence of a strong Van-Hove singularityPhysical Review Letters, 1985
- Indexing problems in quasicrystal diffractionPhysical Review B, 1985
- Quasiperiodic PatternsPhysical Review Letters, 1985
- A simple derivation of quasi-crystalline spectraJournal of Physics A: General Physics, 1985
- Quasicrystals: A New Class of Ordered StructuresPhysical Review Letters, 1984
- Metallic Phase with Long-Range Orientational Order and No Translational SymmetryPhysical Review Letters, 1984
- On periodic and non-periodic space fillings ofEmobtained by projectionActa Crystallographica Section A Foundations of Crystallography, 1984
- Crystallography and the penrose patternPhysica A: Statistical Mechanics and its Applications, 1982
- Mathematical GamesScientific American, 1977