Anharmonic phonon coupling in vapor-liquid-solid grown ZnO nanowires

被引：7

作者：

Soudi, A. ^{[1
]}

Lopez, R., Jr. ^{[1
]}

Dawson, R. D. ^{[1
]}

Gu, Y. ^{[1
]}

机构：

[1] Washington State Univ, Dept Phys & Astron, Pullman, WA 99164 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 19期

基金：

美国国家科学基金会;

关键词：

THERMAL EXPANSION; OXIDE;

D O I：

10.1063/1.3263709

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have determined quantitatively third-order anharmonic phonon Coupling matrix elements in vapor-liquid-solid (VLS) grown ZnO nanowires, via an analysis of the Raman line shape of the E-2(high) phonon mode. The results Suggest that the decay of the E-2(high) phonon into the sum of two acoustic phonons is suppressed in VLS-grown ZnO nanowires compared to bulk ZnO. While further studies are needed to elucidate the origin of this phenomenon. we suggest that isotope effects oil Zn vapor transport and diffusion through metal nanocatalysts, processes during the VLS growth. call be contributing mechanisms. (C) 2009 American Institute of Physics. [doi:10.1063/1.3263709]

引用

页数：3

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