Attosecond time-resolved photoemision from Ag(111) and Au(111)

Motivated by very recent time-resolved photoemission experiments from solid surfaces using the RABBITT (reconstruction of attosecond beating by interference of two-photon transitions) method [1,2], we calculated RABBITT spectra from Ag(111) and Au(111) surfaces. In this contribution we focus on the modeling of the unperturbed valence electronic structure and compare numerical results obtained by representing the d-valence band of the target by either eigenstates of a parameterized effective potential (``Chulkov potential'') [3] or tight-binding states [4]. We find RABBITT specta based on tight-binding initial states to be in better agreement with the experimental spectra in Ref. [1]. We further find it necessary to include -- through an appropriate modification of field-dressed free-electron (Volkov) states - the Fresnel transmission and reflection of the streaking IR-laser pulse at the vacuum-solid interface [5]. [1] R. Locher \textit{et al.} Optica \textbf{2}, 405 (2015). [2] Z. Tao \textit{et al.} Science \textbf{353}, 62 (2016). [3] E. Chulkov, V. Silkin, and P. Echenique, Surf. Sci. 437, 330 (1999). [4] C. H. Zhang and U. Thumm, Phys. Rev. A \textbf{80}, 032902 (2009) [5] M. J. Ambrosio and U. Thumm, A \textbf{94}, 063424 (2016).