EDP Sciences Journals List

• All issues
• Special issues
• Online First
• Forthcoming
• Highlight papers
• News
• Search

Home Document

Subscriber Authentication Point

Journal homepage

Table of contents

 Previous article  Next article 

• Abstract
• - PDF (423.0 KB)

Services

• Same authors
  - Google Scholar
  - EDP Sciences database
• Related articles
  
  - EDP Sciences database
•  
• Recommend this article
• Download citation
• Alert me when this article is corrected

Bookmarking

• BibSonomy	CiteUlike
  Connotea	Del.icio.us
  Digg	Facebook

• EDPS account
• Email-alert

This article has an erratum: [erratum]

Eur. Phys. J. D 4, 95-108

Optical properties of gold metal clusters: A time-dependent local-density-approximation investigation

J. Lermé¹ - B. Palpant¹ - B. Prével² - E. Cottancin¹ - M. Pellarin¹ - M. Treilleux² - J.L. Vialle¹ -
A. Perez² - M. Broyer¹

¹ Laboratoire de Spectrométrie Ionique et Moléculaire, CNRS and Université Lyon I, Bâtiment 203,
43 boulevard du 11 novembre 1918, 69622 Villeurbanne Cedex, France
² Département de Physique des Matériaux, CNRS and Université Lyon I, Bâtiment 203,
43 boulevard du 11 novembre 1918, 69622 Villeurbanne Cedex, France

Received: 9 March 1998 / Revised: 5 June 1998 / Accepted: 3 July 1998

Abstract
The optical response of free and matrix-embedded gold metal clusters Au_N is investigated in the framework of the time-dependent local-density-approximation (TDLDA). The characteristics of the surface plasmon resonance are carefully analyzed as a function of the model parameters and the particle radius. The strong influence of the frequency-dependence of the 5d core-electron dielectric function in the vicinity of the interband threshold is emphasized. The size evolution of the Mie-frequency in free gold clusters exhibits a noticeable blue-shift trend as the particle size decreases, much stronger than in silver clusters. The width and shape of the resonance, essentially ruled by the decay via the interband transitions, are found closely correlated to the imaginary component of the core-electron dielectric function. In presence of a surrounding matrix the blue-shift trend is largely rubbed out. Agreement with recent experimental results on size-selected gold clusters embedded in an alumina matrix may be achieved by taking into account the porosity effects at the metal/matrix interface. The comparison with the predictions of classical models is also provided.

PACS
36.40.-c Atomic and molecular clusters - 71.45.-d Collective effects - 71.45.Gm Exchange,
correlation, dielectric and magnetic functions, plasmons

Author for correspondance: lerme@hplasim2.univ-lyon1.fr

Contents | PDF_file_(423 Kb)

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link containsarticle metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means:

• if your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages,
• you can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library,
• you can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.

Back to top

• EDP Sciences
• Credits
• Contacts