Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 8: Nanophotonics and Integrated Photonics II

Q 8.5: Talk

Monday, March 2, 2026, 18:15–18:30, P 3

Feibelman parameters from jellium models for a metal surface — •Carsten Henkel — Universität Potsdam, Institut für Physik und Astronomie

In nano-photonics, we currently witness a revived interest in quantum models for the surface of a metal, going beyond a sharp, macroscopic interface between two media with local conductivities [1]. Multiple physical features coexist: the atomic lattice structure (crystalline, re-constructed or amorphous) [1], the smooth onset of the electron density [2], the creation of electron-hole pairs [4] and of collective longitudinal excitations like (surface) plasmons [5]. We revisit 100 years of jellium models starting from hydrodynamics with simple exchange-correlation potentials. The aim is to capture the optical response of the surface in terms of few additional Feibelman parameters related to the oscillating near-surface charge [6].

[1] C. Ciracì and F. Della Sala, Phys. Rev. B 93 (2016) 205405; N. Asger Mortensen & al, Nanophotonics 10 (2021) 3647
[2] R. Smoluchowski, Phys. Rev. 60 (1941) 661
[3] J. Frenkel, Z. Physik 51 (1928) 232
[4] I. Tamm and S. Schubin, Z. Phys. 68 (1931) 97
[5] D. Wagner, Z. Naturforsch. A 21 (1966) 634; G. Mukhopadhyay and S. Lundqvist, Physica Scr. 17 (1978) 69
[6] J. Harris and A. Griffin Phys. Lett. A 34 (1971) 51; K. Kempa and W. L. Schaich, Phys. Rev. B 34 (1986) 547; Peter J. Feibelman, Phys. Rev. B 40 (1989) 2752

Keywords: surface plasmon; photoelectric effect; Landau damping