CLUSTERING PROPERTIES OF ENERGY-SPECTRA FOR ONE-DIMENSIONAL GENERALIZED FIBONACCI LATTICES

被引：15

作者：

OH, GY

RYU, CS

LEE, MH

机构：

[1] Department of Physics, Seoul National University

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.47.6122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Clustering properties of energy spectra for one-dimensional (1D) generalized Fibonacci (GF) lattices are studied. Branching rules (BR) of the energy spectra for the silver-mean (SM) and the copper-mean (CM) lattices are established by means of the ideal of an approximated renormalization-group (RG) scheme and confirmed by diagonalizing the Hamiltonian matrices. The SM and CM lattices have six and five global subband structures, respectively. There coexist trifurcation and pentafurcation in the splittings of subbands which are not shown in the ordinary Fibonacci lattice. This study gives a rather intuitive picture in understanding the electronic properties of the GF lattices.

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页码：6122 / 6125

页数：4

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