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Department Dynamics and Transport in Quantum Materials

Research methods

Our department operates laboratories for sample synthesis and chararacterization as well as the RIXS-beamline U41-PEAXIS at HZB's synchrotron source BESSY II.

For our research we further use the laboratory infrastructure at HZB and BESSY II and carry out measurements at synchrotron and neutron sources at other national and international large-scale research facilities.

Sample synthesis

We use our chemistry laboratories to synthesize powder and single crystalline samples of novel quantum materials. For that purpose, we rely mostly on conventional solid state synthesis and optical floating zone crystal growth methods. We further synthesize nano- and microstructured porous silicon single crystal samples by wet-etching methods.

Sample characterization

Our department operates several laboratories for fundamental chemical and physical characterizations of quantum materials, which are equipped with both commercial as well as in-house custom-developed instruments.

In addition to our own laboratory instruments, we use instruments and laboratories of the HZB X-ray and quantum materials corelabs for our research.

Synchrotron methods and resonant inelastic X-ray scattering (RIXS)

For the investigation of structural, phonon, electronic and magnetic properties we employ elastic and inelastic X-ray scattering (IXS) techniques at various synchrotron facilities around the world.

At BESSY II, our department operates the RIXS instrument U41-PEAXIS and provides user service for in-house and external measurement guests within the BESSY II user program.

Neutron scattering methods and neutron resonance spin echo (NRSE) spectroscopy

For the detailed investigation of phonon and magnetic excitations we carry out inelastic neutron scattering experiments at international neutron sources. We use our additional expertise in highest resolution neutron scattering techniques, and in particular in neutron spin echo resonance spectroscopy (NRSE), for the study of lifetimes of elementary excitations in quantum materials. These lifetime studies directly inform on the interactions between quasiparticles (phonons, magnons). In this framework we engage in the continuous development of instrumentation and data analysis methods.