Title: XPS limit in soft X-ray photoemission spectroscopy of Ag(001)
Authors: Nicolai, Laurent Christophe
Minár, Jan
Citation: NICOLAI, L.C.h., MINÁR, J. XPS limit in soft X-ray photoemission spectroscopy of Ag(001). In AIP Conference Proceedings. MELVILLE, NY: AMER INST PHYSICS, 2018. s. [1-5]. ISBN 978-0-7354-1712-0 , ISSN 0094-243X.
Issue Date: 2018
Publisher: AIP Publishing
Document type: konferenční příspěvek
URI: 2-s2.0-85051855380
ISBN: 978-0-7354-1712-0
ISSN: 0094-243X
Keywords in different language: XPS limit, Angle-Resolved PhotoEmission Spectroscopy (ARPES), Coherent Potantial Approximation (CPA), one-step model, phonon contribution, lattice vibration, dipole-selection rule.
Abstract in different language: PhotoEmission Spectroscopy (PES) is a surface sensitive technique within the Ultra-Violet regime. A way to make it more bulk sensitive consists in increasing the photon energy for entering the X-ray regime. As a counterpart, this increase breaks the k-conserving dipole selection rule and results in a smearing of the measured electronic band structure caused by phonon-assisted electronic transitions. It is therefore essential to model this physical effect within ab-initio calculations. We herewith sketch the implementation of lattice vibrations within the one-step model of photoemission through the Coherent Potential Approximation (CPA). Moreover, we show a practical example with the case of Ag(001) on which the influence of photon energy and/or temperature is benchmarked and interpreted.
Rights: © AIP Publishing
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