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Azize Koc
Researcher at University of Potsdam
Publications - 6
Citations - 107
Azize Koc is an academic researcher from University of Potsdam. The author has contributed to research in topics: Femtosecond & Diffraction. The author has an hindex of 1, co-authored 1 publications receiving 75 citations. Previous affiliations of Azize Koc include University of Duisburg-Essen.
Papers
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Journal ArticleDOI
Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials
Peter Zalden,Peter Zalden,F. Quirin,Mathias Schumacher,Jan Siegel,Shuai Wei,Azize Koc,Azize Koc,M. Nicoul,Mariano Trigo,Pererik Andreasson,Henrik Enquist,Michael J. Shu,T. Pardini,Matthieu Chollet,Diling Zhu,Henrik T. Lemke,Henrik T. Lemke,Ider Ronneberger,Jörgen Larsson,Aaron M. Lindenberg,Aaron M. Lindenberg,Henry E. Fischer,Stefan P. Hau-Riege,David A. Reis,Riccardo Mazzarello,Matthias Wuttig,Matthias Wuttig,Klaus Sokolowski-Tinten +28 more
TL;DR: A liquid–liquid phase transition in the phase-change materials Ag4In3Sb67Te26 and Ge15Sb85 at 660 and 610 kelvin, respectively is found, revealing a relationship between atomic structure and kinetics, enabling a systematic optimization of the memory-switching kinetics.
Journal ArticleDOI
Quantum pathways of carrier and coherent phonon excitation in bismuth
Azize Koc,I. Gonzalez-Vallejo,Matthias Runge,Ahmed Ghalgaoui,Klaus Reimann,L. Kremeyer,F. Thiemann,M. Horn-von Hoegen,Klaus Sokolowski-Tinten,M. Werner,Thomas Elsaesser +10 more
TL;DR: In this article , femtosecond x-ray diffraction reveals oscillations of diffracted intensity at a frequency of 2.6 THz, which persist on a picosecond time scale.
Proceedings ArticleDOI
Unveiling the underdamped longitudinal soft mode in paraelectric KDP by ultrafast x-ray diffraction
TL;DR: In this paper , the authors presented ultrafast x-ray diffraction experiments of the underdamped soft mode in paraelectric KDP, revealing oscillatory electronic charge relocations over interatomic distances, much larger than the sub-picometer nuclear displacements.
Proceedings ArticleDOI
High-flux table-top hard X-ray source driven by few-cycle 5 μm OPCPA at a 1 kHz repetition rate
Azize Koc,Cornelia Hauf,M. Werner,Lorenz von Grafenstein,Dennis Ueberschaer,Martin Bock,Uwe Griebner,Thomas Elsaesser +7 more
TL;DR: In this paper , a table-top femtosecond hard X-ray source at 8 keV provides a flux of up to 1.5 × 1012 photons/s.
Proceedings ArticleDOI
Underdamped longitudinal soft mode dynamics in KDP observed by ultrafast x-ray diffraction
TL;DR: In this article , x-ray powder diffraction reveals a longitudinal underdamped soft mode in paraelectric KDP and electron density maps derived from the xray data demonstrate oscillatory charge relocations over interatomic distances, much larger than the underlying nuclear displacements.