Raman scattering in low dimensional, frustrated electron systems

Focus: 
Precision Experiments

Reliable reproducibility of measured values is vital in metrology. Therefore, it is of great importance to express every commensurable quantity through well-defined standards.

One of the most active fields in solid state physics deals with discovering new elementary excitations in form of so-called quasi particles. In the future, these quantized low energy excitations can be useful in metrology to help and improve the accuracy of formerly uncertain measurements (cf. Quantum Hall effect).

For probing the solid for such excitations, we use the non-destructive method of inelastic light scattering ("Raman scattering"), which is sensitive to nearly all kinds of low energy excitations and thus a very powerful and universal technique.

Furthermore, it is possible to detect slightest deviations (e.g. distortions) from the crystal structure with a given symmetry and lattice parameters. In addition, we use our Raman setup to accurately determine the size of nano particles (e.g. silicon crystallites).

Mentor/s: 
G├╝ttler
Mentor/s: 
Lemmens
Institution: 
TU Braunschweig
Status: 
completed
Ph.D. student: 
Wulferding