Regensburg 2016 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 48: Poster Session II

MA 48.12: Poster

Donnerstag, 10. März 2016, 15:00–18:00, Poster B1

Time-resolved spontaneous Raman scattering in complex materials — •Christoph Boguschewski, Rolf B. Versteeg, Prashant Padmanabhan, Thomas Koethe, Jingyi Zhu, and Paul H.M. van Loosdrecht — II. Physikalisches Institut - Universität zu Köln, Zülpicher Straße 77, 50937 Cologne, Germany

Complex materials show a strong interplay between different degrees of freedom giving rise to a variety of intriguing ground states, and novel excitations. Raman spectroscopy allows to measure these excitations and to determine the symmetry of the probed ground state. Expanding the Raman spectroscopy technique into the time domain opens up new opportunities to study symmetry changes following optically induced phase transitions, to probe quasiparticle population statistics of unconventional ground states on ultrafast timescales, and to address fundamental questions regarding angular momentum transfer in complex materials.

Here, we present our newly constructed time-resolved, high spectral resolution Raman spectroscopy system, fully dedicated to the study of complex matter within the picosecond temporal regime. An overview of our first results on quasiparticle scattering in antiferromagnetic materials is presented.