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Phys. Rev. B 71, 245120 (2005) [7 pages]

Critical level statistics of the Fibonacci model

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Michihiro Naka1, Kazusumi Ino1, and Mahito Kohmoto2
1Department of Pure and Applied Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
2Institute of Solid State Physics, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa-shi, Chiba, 277-8581, Japan

Received 8 October 2004; revised 10 March 2005; published 30 June 2005

We numerically analyze spectral properties of the Fibonacci model which is a one-dimensional quasiperiodic system. We find that the energy levels of this model have the distribution of the band widths w obeys PB(w)∼wα (w→0) and PB(w)∼eβw (w), the gap distribution PG(s)∼sδ (s→0) (α,β,δ>0). We also compare the results with those of the multiscale Cantor sets. We find qualitative differences between the spectra of the Fibonacci model and the multiscale Cantor sets.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.71.245120
DOI:
10.1103/PhysRevB.71.245120
PACS:
71.23.Ft, 05.45.Pq, 05.70.Jk