Lattice dynamics observed with x-ray diffraction

Dissertation, Universität Potsdam, 2020

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Bibliographische Detailangaben
1. Verfasser:	Pudell, Jan-Etienne (VerfasserIn)
Körperschaft:	Universität Potsdam (Grad-verleihende Institution)
Weitere Verfasser:	Bargheer, Matias (AkademischeR BetreuerIn), Sokolowski-Tinten, Klaus (AkademischeR BetreuerIn), Eisebitt, Stefan (AkademischeR BetreuerIn)
Format:	UnknownFormat
Sprache:	eng
Veröffentlicht:	Potsdam September 2020
Schlagworte:	Hochschulschrift
Online Zugang:	Inhaltsverzeichnis
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Beschreibung
Zusammenfassung:	Dissertation, Universität Potsdam, 2020 In this thesis I summarize my contribution to the research field of ultrafast structural dynamics in condensend matter. It consists of 17 publications that cover the complex interplay between electron, magnon, and phonon subsystems in solid materials and the resulting lattice dynamics after ultrafast photoexcitation. The investigation of such dynamics is necessary for the physical understanding of the processes in materials that might become important in the future as functional materials for technological applications, for example in data storage applications, information processing, sensors, or energy harvesting. In this work I present ultrafast x-ray diffraction (UXRD) experiments based on the optical pump – x-ray probe technique revealing the time-resolved lattice strain. To study these dynamics the samples (mainly thin film heterostructures) are excited by femtosecond near-infrared or visible light pulses. The induced strain dynamics caused by stresses of the excited subsystems are measured in a pump-probe scheme with x-ray ...
Beschreibung:	publikationsbasierte Dissertation
Beschreibung:	XII, 259 Seiten Illustrationen, Diagramme