High-order vibration modes of bimetallic Ag-Au nanoparticles embedded in glass

被引：22

作者：

Adichtchev, S. ^{[1
]}

Sirotkin, S. ^{[1
]}

Bachelier, G. ^{[2
]}

Saviot, L. ^{[3
]}

Etienne, S. ^{[4
]}

Stephanidis, B. ^{[1
]}

Duval, E. ^{[1
]}

Mermet, A. ^{[1
]}

机构：

[1] Univ Lyon 1, Lab Physicochim Mat Luminescents, CNRS, UMR 5620, F-69622 Villeurbanne, France

[2] Univ Lyon 1, Lab Spect Ion & Mol, CNRS, UMR 5579, F-69622 Villeurbanne, France

[3] Univ Bourgogne, Inst Carnot Bourgogne, CNRS, UMR 5209, F-21078 Dijon, France

[4] Nancy Univ, Ecole Europeenne Ingn Genie Mat, F-54010 Nancy, France

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 20期

关键词：

glass; gold alloys; nanoparticles; Raman spectra; silver alloys; ACOUSTIC VIBRATIONS; METAL NANOPARTICLES; RAMAN-SCATTERING; NANOCRYSTALS;

D O I：

10.1103/PhysRevB.79.201402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-resolution low-frequency Raman scattering measurements from embedded AgAu nanoparticles unveil efficient scattering by harmonics of both the quadrupolar and the spherical modes. Comparing the experimental data with theoretical calculations that account for both the embedding medium and the resonant Raman process enables a very complete description of the observed multiple components in terms of harmonics of both the quadrupolar and spherical modes, with a dominating Raman response from the former ones. It is found that only selected harmonics of the quadrupolar mode contribute significantly to the Raman spectra in agreement with earlier theoretical predictions.

引用

页数：4

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