Gold Nanowires: A Time-Dependent Density Functional Assessment of Plasmonic Behavior

被引：63

作者：

Piccini, GiovanniMaria ^{[1
]}

Havenith, Remco W. A. ^{[2
]}

Broer, Ria ^{[2
]}

Stener, Mauro ^{[3
,4
,5
]}

机构：

[1] Humboldt Univ, Inst Chem, D-10099 Berlin, Germany

[2] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands

[3] Univ Trieste, Dipartimento Sci Chim & Farmaceut, Via L Giorgieri 1, I-34127 Trieste, Italy

[4] Consorzio Interuniv Nazl Sci & Tecnol Mat, INSTM, Unita Trieste, I-34127 Trieste, Italy

[5] INFM DEMOCRITOS Natl Simulat Ctr, Trieste, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2013年 / 117卷 / 33期

关键词：

OPTICAL-ABSORPTION SPECTRA; ELECTRONIC-STRUCTURE; METAL-CLUSTERS; SILVER; NANOPARTICLES; SIZE; AG; NANOCLUSTERS; EXCITATION; CHEMISTRY;

D O I：

10.1021/jp405769e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface plasmon resonance has been theoretically investigated in gold nanowires by means of time-dependent density functional theory. Linear chains of Au atoms and nanowires with the structure of the fcc bulk gold grown along the < 110 > and < 111 > directions have been considered. The effects of changing the length and the section on the plasmon have been studied. Strong photoabsorption is found when the length is above 2 nm: in that case the absorption profile is characterized by a sharp peak, and its analysis reveals that many configurations contribute to the transition, confirming its collective nature as an s <- s intraband transition. As expected, the effect of increasing the length is reflected in a red shift of the plasmon.

引用

页码：17196 / 17204

页数：9

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