Dresden 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 67: Focus Session: Unoccupied States by Inverse Photoemission II
O 67.10: Vortrag
Mittwoch, 11. März 2026, 17:30–17:45, WILL/A317
Towards high resolution IPES in the VUV range — Giacomo Merzoni1, Samuele Comizzoli1, Giacomo Panzera1, Lucio Braicovich1,2, and •Giacomo Ghiringhelli1,3 — 1Politecnico di Milano, Italy — 2ESRF, Grenoble, France — 3CNR/SPIN, Politecnico di Milano, Italy
Since its concept was introduced and its feasibility was demonstrated, the conceptual interest of angle-resolved inverse photoemission (ARIPES) has not declined. Unfortunately, for decades technical challenges have kept ARIPES in a niche. At the same time direct photoemission, ARPES, has become a popular and unmissable technique for the determination of the electronic structure of solids. ARPES spectra are commonly measured with energy resolution better than 30 meV, a figure still unachieved in ARIPES. Which explains the different popularity of the two complementary techniques.
Is it possible to design today an ARIPES instrument that better exploits the technological progress undergone over the years by detectors and optical elements for VUV radiation, and by monocromatized electron-beam sources?
We present some ideas guiding the realization of an ARIPES apparatus working in the 20-100 eV energy range. Aiming at a combined instrumental bandwidth smaller than 50 meV, it is based on a high-luminosity grating spectrometer and a 2D position sensitive semiconductor detector.
Keywords: Inverse Photoemission; Grating spectrometer; High energy resolution