OPTICAL-PHONON TRANSPORT AND LOCALIZATION IN PERIODIC AND FIBONACCI POLAR-SEMICONDUCTOR SUPERLATTICES

被引：7

作者：

HUANG, DH ^{[1
]}

GUMBS, G ^{[1
]}

ZHAO, Y ^{[1
]}

AUNER, GW ^{[1
]}

机构：

[1] CUNY HUNTER COLL,DEPT PHYS & ASTRON,NEW YORK,NY 10021

来源：

PHYSICS LETTERS A | 1995年 / 200卷 / 06期

关键词：

D O I：

10.1016/0375-9601(95)00213-M

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A transfer-matrix formalism is employed to study optical-phonon transport in a macroscopic continuum model for both periodic and Fibonacci polar-semiconductor superlattices. A phonon bandgap with subband structures is obtained for the periodic superlattices, However, in the Fibonacci superlattices, there is a spectrum trifurcation and self-similarity. The LO phonon localization length is calculated from which we confirm the existence of complete exponential localization of LO phonons.

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页码：459 / 463

页数：5

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