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O: Fachverband Oberflächenphysik
O 67: Focus Session: Unoccupied States by Inverse Photoemission II
O 67.3: Vortrag
Mittwoch, 11. März 2026, 15:45–16:00, WILL/A317
Beyond the surface: Probing electronic structure with IPES in Valparaíso-Chile — Patricia Martínez1, Rolando. Esparza1, Jonathan Correa-Puerta1, Valeria del Campo1, Ricardo Henríquez1, •Patricio Häberle1, Sanber Viscaya1, Eric Suárez-Morell1, Patricio Vargas1, Jean F. Veyan2, Marcos Flores3, and Samuel Hevia4 — 1Departamento de Física, Universidad Técnica Federico Santa María, Valparaíso, Chile — 2Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, Texas 75080, USA — 3Physics Department, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile — 4Instituto de Física and CIEN-UC, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 1860, Macul, Chile
Over the past few years, we have employed angle-resolved inverse photoemission spectroscopy (IPES) at the Valparaíso facility, utilizing both the isochromat mode and photon energy-resolving capabilities. This technique has enabled us to investigate systems exhibiting electronic structures modified by various forms of quantum confinement. We have characterized metallic thin films, carbon nanotubes, self-assembled monolayers (SAMs), and two-dimensional semiconductors. Whenever feasible, we have mapped unoccupied energy bands; however, in many instances, we have relied on simulations and inventive averaging to extract meaningful information from these low-symmetry nanoscale systems. A comprehensive overview of our experimental findings and future directions will be presented.
Keywords: Ag/Al(100), Carbon nanotubes, Thiols SAM, InSe