Table 1.

Parameters used in Drude model.

	${\mathit{\epsilon }}_{\mathit{\infty }}$	${\mathit{\omega }}_{\mathit{D}} (\mathbf{rad}/\mathbf{s})$	A1	A2	${\mathit{\varphi }}_1$	${\mathit{\varphi }}_2$	${\mathsf{\Omega }}_1 (\mathbf{rad}/\mathbf{s})$	${\mathsf{\Omega }}_2 (\mathbf{rad}/\mathbf{s})$	${\mathsf{\Gamma }}_1 (\mathbf{rad}/\mathbf{s})$	${\mathsf{\Gamma }}_2 (\mathbf{rad}/\mathbf{s})$
Au	1.1431	1.3202 × 1016	0.2669	3.0834	−1.2371	−1.0968	3.8711 × 1015	4.1684 × 1015	4.4642 × 1014	2.3555 × 1015
Ag	15.833	1.3861 × 1016	1.0171	15.797	−0.9394	1.8087	6.6327 × 1015	9.2726 × 1017	1.6666 × 1015	2.3716 × 1017