Figure 1
From: Nonequilibrium band occupation and optical response of gold after ultrafast XUV excitation
Electron response to XUV excitation of gold: (a) evolution of the 6sp-band density; (b) response of the 5d-band density; (c) direct excitation of the 4f-shell; (d) evolution of the electron and ion temperatures; (e) the transient chemical potentials relative to the Fermi energy \(E_F\) for the 6sp- and 5d-electrons. The grey shaded area represents the time when the pump pulse is active. The full red lines and the blue dashed lines follow from calculations with the electron–phonon coupling according to Ref.34 and Ref.35, respectively. The green line assumes instant equilibration of the 5d- and 6sp-bands. The experimental data point in panel (a) is taken from Ref.12.
