Raman scattering of germanium nanocrystals embedded in glass matrix under hydrostatic pressure

被引：8

作者：

Liu, L

Shen, ZX

Teo, KL

Kolobov, AV

Maeda, Y

机构：

[1] Natl Univ Singapore, Fac Sci, Dept Phys, Singapore 117542, Singapore

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 119260, Singapore

[3] Natl Inst Adv Ind Sci & Technol, Lab Adv Opt Technol, Tsukuba, Ibaraki 3058562, Japan

[4] Osaka Prefecture Univ, Osaka 5998531, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2003年 / 93卷 / 11期

关键词：

D O I：

10.1063/1.1569661

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the hydrostatic pressure dependence of Ge nanocrystals embedded into SiO2 matrix on quartz-glass substrate by Raman scattering at room temperature. The pressure coefficient (domega/dP = 0.77 cm(-1) kbar(-1)) obtained for the Ge-Ge mode in the nanocrystals is found to be almost twice as large compared with its corresponding bulk value (domega/dP = 0.39 cm(-1) kbar(-1)). We explained our results using a simple elastic model, which describes the effective pressure transmitted from the matrix to the nanocrystals, (C) 2003 American Institute of Physics.

引用

页码：9392 / 9394

页数：3

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