Relativistic Band Calculation and the Optical Properties of Gold

Abstract

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Anomalous Frequency and Temperature Dependence of the Optical Absorption of Small Gold Particles

“…Thus, the interband onset energy shifts from about 2.3 eV in particles of lo4 atoms to 1.8 eV in particles of about 5 x lo2 atoms. In bulk gold the edge is due to direct transitions from Sd bands to the Ferrni level in the 6s band around L (threshold energy : 2.38 eV) with a small contribution of transitions near X (threshold : 1.7 eV) [46].…”

“…Investigations [45] of the surface atoms on (110)-planes of A1 yielded changes of about 10 % compared to the volume. For bulk gold Christensen and Seraphin [46] computed the effects of lattice constant changes on band structure and dielectric constant. They found that the interband transitions at the threshold are shifted by-0.2 eV if the lattice is contracted by 2 %.…”

Compared optical properties of noble and transition metal-dielectric granular films

“…3) Due to the absence of an interband transition contribution in Au beyond 600 nm [3]. Figure 9 shows the size dependent relaxation time 1ï/1:e for Au versus the particle radius.…”

“…Regarding the electronic structure Au [3] and Pt [4] The D.C. resistivity of the films was deduced from resistance measurements using an electrometer (before percolation) or a resistance bridge (near and after percolation).…”

Spectroscopic study of optically induced ultrafast electron dynamics in gold

“…Due to its well-known optical properties, 19,24 gold has been the metal most widely studied in optical pump-probe measurements. A correct understanding of its transient reflectivity provides a basis for the understanding and quantification of experiments on other metals.…”