Global energy spectra of bands and density of states in a class of two-tile systems期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Global energy spectra of bands and density of states in a class of two-tile systems

Authors:	X. H. Yan J. R. Yan J. Q. You Y. P. Mei

Affiliation:	(1) China Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, 100080 Beijing, People's Republic of China;(2) Institute of Modern Physics and Department of Physics, Xiangtan University, 411105 Xiangtan, People's Republic of China;(3) Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Academia Sinica, 72 Wenhua Road, 110015 Shengyang, People's Republic of China

Abstract:	Electronic properties of a general class of one-dimensional two-tile systems are calculated exactly. The systems containing periodic crystals, generalized Fibonacci quasicrystals, generalized Thue-Morse aperiodic lattices and even other two-tile aperiodic lattices, can be divided into two different families which are constructed by the inflation rules: {A, B}{A^m11B^m12,A^m21B^m22} and {A, B}{Aⁿ¹¹Bⁿ¹²,Bⁿ²¹Aⁿ²²}, respectively. As typical examples, global spectra of bands and density of states in some two-tile aperiodic systems are numerically calculated. Some interesting properties are obtained.

Keywords:	71.25.Cx 61.42.+h 71.25.-s
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