Effective mass enhancement and ultrafast electron dynamics of Au(111) surface state coupled to a quantum well

• Main Authors: Varykhalov, A., Freyse, F., Aguilera, I., Battiato, Marco, Krivenkov, M., Marchenko, D., Bihlmayer, G., Blügel, S., Rader, O., Sánchez-Barriga, J.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2022
• Subjects: Science::Physics; Angle-Resolved Photoemission; Electron Population
• Online Access: https://hdl.handle.net/10356/160700
• Institution: Nanyang Technological University

We show that, although the equilibrium band dispersion of the Shockley-type surface state of two-dimensional Au(111) quantum films grown on W(110) does not deviate from the expected free-electron-like behavior, its nonequilibrium energy-momentum dispersion probed by time- and angle-resolved photoemi...