Fig. 2: FS cross-sections for Ag(100).
From: High-energy photoemission final states beyond the free-electron approximation
Theoretical FS (a), its experimental out-of-plane cross-section (b), and two in-plane cross-sections (c) measured at the indicated hv values, bringing Kz to the Г and X points (lower and upper panels, respectively). Replicas and broadening of the FS contours in certain (kx,Kz) regions (such as those marked by magenta and yellow arrows, respectively) manifest MBFSs. These effects are particularly clear in the ARPES image and kx-MDC at hv = 997 eV (d, top) in contrast to those at hv = 894 eV (bottom). These effects are beyond the one-step ARPES calculations with FE-like final states (e).
