THE EFFECT OF AN INTERELECTRON INTERACTION ON ELECTRONIC-PROPERTIES IN ONE-DIMENSIONAL QUASI-PERIODIC SYSTEMS

被引：18

作者：

HIRAMOTO, H

机构：

[1] Institute of Materials Science, University of Tsukuba, Tsukuba

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 03期

关键词：

D O I：

10.1143/JPSJ.59.811

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of an interelectron interaction (U) on electronic properties in one-dimensional quasiperiodic systems (the incommensurate Harper model and the Fibonacci model) is studied within the Hartree-Fock (HF) approximation. For the Fibonacci model, the HF one-body spectrum remains singular continuous (critical wave functions) for small |U|. For the Harper model, on the other hand, the singular continuous spectrum at critical coupling (λc=2) disappears as soon as U is added. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

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页码：811 / 814

页数：4

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