Spectroscopic Evidence for a New Type of Surface Resonance at Noble-Metal Surfaces

Eul, Tobias; Braun, Jürgen; Stadtmüller, Benjamin; Ebert, Hubert und Aeschlimann, Martin (2021): Spectroscopic Evidence for a New Type of Surface Resonance at Noble-Metal Surfaces. In: Physical Review Letters, Bd. 127, Nr. 19, 196405

Abstract

We investigated the surface and bulk properties of the pristine (110) surface of silver using threshold photoemission by excitation with light of 5.9 eV. Using a momentum microscope, we identified two distinct transitions along the Gamma Y direction of the crystal. The first one is a so far unknown surface resonance of the (110) noble-metal surface, exhibiting an exceptionally large bulk character that has so far been elusive in surface sensitive experiments. The second one stems from the well-known bulklike Mahan cone oriented along the Gamma L direction inside the crystal but projected onto the (110)-surface cut. The existence of the new state is confirmed by photocurrent calculations, and its character is analyzed.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 0031-9007
• Sprache: Englisch