Ultrafast magnetization dynamics in Nickel: impact of pump photon energy
2017 | journal article. A publication with affiliation to the University of Göttingen.
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Ultrafast magnetization dynamics in Nickel: impact of pump photon energy
Bierbrauer, U.; Weber, S. T.; Schummer, D.; Barkowski, M.; Mahro, A.-K.; Mathias, S. & Schneider, H. C. et al. (2017)
Journal of Physics. Condensed Matter, 29(24) art. 244002. DOI: https://doi.org/10.1088/1361-648X/aa6f73
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Details
- Authors
- Bierbrauer, Ute; Weber, Sebastian T.; Schummer, David; Barkowski, Moritz; Mahro, Anna-Katharina; Mathias, Stefan ; Schneider, Hans Christian; Stadtmueller, Benjamin; Aeschlimann, Martin; Rethfeld, Baerbel
- Abstract
- Magnetization dynamics on a femtosecond timescale has been observed for a huge variety of magnetic structures. However, the influence of different excitation photon energies has not been studied in detail yet. In our time-resolved magneto-optical Kerr effect setup we excite a Nickel bulk system with 1.55 and 3.1 eV, respectively, leading to different remagnetization dynamics depending on the chosen photon energy. Furthermore we complement our experimental data with a theoretical approach applying appropriate Boltzmann collision integrals including the density of states of Nickel. The comparison between the experimental data and the theoretical approach indicates that photon-energy dependent transport processes play a major role in this setup.
- Issue Date
- 2017
- Status
- published
- Publisher
- Iop Publishing Ltd
- Journal
- Journal of Physics. Condensed Matter
- ISSN
- 0953-8984
- eISSN
- 1361-648X
- ISSN
- 1361-648X; 0953-8984
