Designing materials for plasmonic systems: The alkali-noble intermetallics

Blaber, MG; Arnold, MD; Ford, MJ

Designing materials for plasmonic systems: The alkali-noble intermetallics

Blaber, MG

Arnold, MD

Ford, MJ

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Publication Type:: Journal Article
Citation:: Journal of Physics Condensed Matter, 2010, 22 (9)
Issue Date:: 2010-02-26

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Field	Value	Language
dc.contributor.author	Blaber, MG https://orcid.org/0000-0001-6391-3593	en_US
dc.contributor.author	Arnold, MD https://orcid.org/0000-0003-4164-0242	en_US
dc.contributor.author	Ford, MJ https://orcid.org/0000-0002-8595-5900	en_US
dc.date.issued	2010-02-26	en_US
dc.identifier.citation	Journal of Physics Condensed Matter, 2010, 22 (9)	en_US
dc.identifier.issn	0953-8984	en_US
dc.identifier.uri	http://hdl.handle.net/10453/13037
dc.description.abstract	We use electronic structure calculations based upon density functional theory to search for ideal plasmonic materials among the alkali-noble intermetallics. Importantly, we use density functional perturbation theory to calculate the electron-phonon interaction and from there use a first order solution to the Boltzmann equation to estimate the phenomenological damping frequency in the Drude dielectric function. We discuss the necessary electronic features of a plasmonic material and investigate the optical properties of the alkali-noble intermetallics in terms of some generic plasmonic system quality factors. We conclude that at low negative permittivities, KAu, with a damping frequency of 0.0224eV and a high optical gap to bare plasma frequency ratio, outperforms gold and to some extent silver as a plasmonic material. Unfortunately, a low plasma frequency (1.54eV) reduces its utility in modern plasmonics applications. We also discuss, briefly, the effect of local fields on the optical properties of these materials. © 2010 IOP Publishing Ltd.	en_US
dc.relation.ispartof	Journal of Physics Condensed Matter	en_US
dc.relation.isbasedon	10.1088/0953-8984/22/9/095501	en_US
dc.subject.classification	Fluids & Plasmas	en_US
dc.title	Designing materials for plasmonic systems: The alkali-noble intermetallics	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	22	en_US
utslib.for	0204 Condensed Matter Physics	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	1007 Nanotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/DVC (Research)
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access
pubs.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	22	en_US

Abstract:

We use electronic structure calculations based upon density functional theory to search for ideal plasmonic materials among the alkali-noble intermetallics. Importantly, we use density functional perturbation theory to calculate the electron-phonon interaction and from there use a first order solution to the Boltzmann equation to estimate the phenomenological damping frequency in the Drude dielectric function. We discuss the necessary electronic features of a plasmonic material and investigate the optical properties of the alkali-noble intermetallics in terms of some generic plasmonic system quality factors. We conclude that at low negative permittivities, KAu, with a damping frequency of 0.0224eV and a high optical gap to bare plasma frequency ratio, outperforms gold and to some extent silver as a plasmonic material. Unfortunately, a low plasma frequency (1.54eV) reduces its utility in modern plasmonics applications. We also discuss, briefly, the effect of local fields on the optical properties of these materials. © 2010 IOP Publishing Ltd.

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http://hdl.handle.net/10453/13037