- Title
- The role of plasmons and interband transitions in the color of AuAl₂, AuIn₂, and AuGa₂
- Creator
- Keast, V. J.; Birt, K.; Koch, C. T.; Supansomboon, S.; Cortie, M. B.
- Relation
- Applied Physics Letters Vol. 99, Issue 11
- Publisher Link
- http://dx.doi.org/10.1063/1.3638061
- Publisher
- American Institute of Physics
- Resource Type
- journal article
- Date
- 2011
- Description
- First principles calculations of the optical properties of the intermetallic compounds AuAl₂, AuIn₂, and AuGa₂ have been performed. Analysis of the dielectric functions showed that AuAl₂ is unique because a bulk plasmon is seen in the optical region and contributes to the purple color of this material. An experimental electron energy-loss spectrum showed excellent agreement with the theoretical prediction and confirmed the presence of the bulk plasmon.
- Subject
- dielectrics; electron spectroscopy; spectrum analysis; bulk plasma
- Identifier
- http://hdl.handle.net/1959.13/934668
- Identifier
- uon:11881
- Identifier
- ISSN:0003-6951
- Rights
- © American Institute of Physics
- Language
- eng
- Full Text
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