2026-04-26T20:23:00Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/653072025-09-17T07:52:51Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

Murphy, B M Müller, M Stettner, J. Requardt, H Krisch, M Press, W Serrano Gutiérrez, Jorge 2008 A brief overview of application of the grazing incidence inelastic x-ray scattering experimental method will be presented. Inelastic x-ray scattering in grazing incidence conditions provides a new tool for selectively studying both surface and bulk lattice dynamics in a single experiment. It is possible to study acoustic and optical surface phonon modes currently with a 3 meV resolution over a wide range of momentum space and make a direct comparison between surface and bulk dispersion. In particular the case of 2H-NbSe2 will be discussed. For this material a Kohn anomaly has been previously reported. Our data demonstrate that the softening of the Kohn anomaly at the 2H-NbSe2 surface is significantly greater than that reported for the bulk. This is an indication of a relaxation in the topmost layers of the crystal. application/pdf https://uvadoc.uva.es/handle/10324/65307 eng Institute of Physics Investigating surface dynamics with inelastic x-ray scattering info:eu-repo/semantics/article TEXT UVaDOC. Repositorio Documental de la Universidad de Valladolid Hispana