SUPERLATTICE EXCITONS AND OPTICAL-ABSORPTION

被引：18

作者：

YOUNG, PM

EHRENREICH, H

HUI, PM

JOHNSON, NF

机构：

[1] CHINESE UNIV HONG KONG, DEPT PHYS, SHA TIN, PEOPLES R CHINA

[2] UNIV OXFORD, DEPT PHYS, CLARENDON LAB, OXFORD OX1 3PU, ENGLAND

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 74卷 / 12期

关键词：

D O I：

10.1063/1.355005

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A formalism based on the superlattice crystal coordinate representation, which is valid for arbitrary well and barrier widths, is developed and applied to the Wannier exciton problem. A simple model for the electron-hole Coulomb interaction within the independent subband approximation permits nonvariational calculation of exciton binding energies, oscillator strengths, and optical absorption of both bound and continuum exciton states. The effects of growth axis directed electric and magnetic fields are emphasized. Numerical results for GaAs/Ga1-xAlxAs and In1-xGaAs/GaAs exciton binding energies and oscillator strengths as functions of well width, barrier width, and electric and magnetic field strengths show excellent agreement with experiment.

引用

页码：7369 / 7378

页数：10

共 27 条

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