Phonon signatures of spontaneous CuPt ordering in Ga0.47In0.53As/InP

被引：12

作者：

Cheong, HM ^{[1
]}

Ahrenkiel, SP ^{[1
]}

Hanna, MC ^{[1
]}

Masccarenhas, A ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 18期

关键词：

D O I：

10.1063/1.122541

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polarized Raman scattering spectra of spontaneously ordered Ga0.47In0.53As alloys, combined with low-temperature photoluminescence and transmission electron microscopy, are used to find a unique phonon signature of CuPtB-type ordering. In the Raman spectra of ordered alloys, a new phonon peak that is absent in the spectrum of the random alloy appears at 181 cm(-1). The intensity of this peak correlates with the degree of ordering inferred from electron diffraction measurements. We propose that Raman scattering measurements can be used as a nondestructive probe to detect spontaneous ordering in this alloy. (C) 1998 American Institute of Physics. [S0003-6951(98)02244-X]

引用

页码：2648 / 2650

页数：3

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