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Archiv-Übersicht     Angebot Nr. 14567

Angebotsdatum: 25. April 2022
Art der Stelle: Doktorarbeit
Fachgebiet: Physik > Festkörperphysik
Titel des Themas: Magnetization dynamics in antiferromagnetic materials

Institut: Institut für Experimentalphysik, Freie Universität Berlin
Frau Christiane Cech
Arnimallee 14
14195 Berlin
Tel.: +49 30 838 56141   Fax.:
Bundesland: Berlin
Homepage: http://www.physik.fu-berlin.de/einrichtungen/ag/ag-kuch
E-Mail Kontakt: mail

Beschreibung: The position is part of project A07 (Prof. Wolfgang Kuch) of the collaborative research center/transregio 227 “Ultrafast Spin Dynamics”. The PhD work will involve X-ray spectroscopy investigations of magnetization dynamics in ultrafast optical excitation of bilayers consisting of antiferromagnetic and ferromagnetic materials to gain insight into the interplay of ultrafast demagnetization, spin currents, and thermal effects. Pump–probe measurements will be employed to follow the magnetization dynamics after ultrashort infrared-laser excitation. Of particular interest is the behavior of the antiferromagnetic spin structure, which is explored by linear magnetic dichroism in resonant x-ray reflectivity.
Methoden: We provide excellent conditions for motivated experimentalists. Extensive equipment for X-ray spectroscopy and state-of-the-art surface science analysis tools can be used. While sample preparation and characterization will be carried out at the Physics department of the Freie Universität, time-resolved measurements will be conducted at synchrotron radiation sources, for example at BESSY II in Berlin.
Anfangsdatum: 25. April 2022
Geschätzte Dauer: limited until 31. December 2025
Bezahlung: 3/4 E13 TV-L FU
Papers: Phys. Rev. Lett.126, 107202 (2021), https://doi.org/10.1103/PhysRevLett.126.107202

Phys. Rev. B 102, 214418 (2020), https://doi.org/10.1103/PhysRevB.102.214418
Sonstiges: A master's degree is required with a master thesis in experimental physics or equivalent. We are seeking a motivated candidate with team spirit and ability for independent work. Experience in one or more of the following is of advantage: Magnetization dynamics, ultrafast pump–probe experiments, surface science, ultra-high vacuum, x-ray absorption spectroscopy.