Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MM: Fachverband Metall- und Materialphysik
MM 9: Poster
MM 9.4: Poster
Montag, 17. März 2025, 18:30–20:30, P1
THz signatures of displacive phase transformation — •Nandita Bajpai1, Michael Dittler1, Ahana Bhattacharya1, Alexander Kunzmann2, Gabi Schierning2, and Martin Mittendorff1 — 1Department of Physics , University of Duisburg — 2Institute for energy and material process, University of Duisburg
Phase Change Materials are widely applied in contemporary technological advancements such as sensors, activators, and electronic devices. The Terahertz time-domain spectroscopy (THz-TDS) reflectivity and transmissivity measurements provide valuable insights into carrier dynamics such as mobility and carrier concentration. The temperature-induced phase change results in significant changes in reflectivity and transmissivity that are linked to the presence of free electrons.
Furthermore, the change in the complex conductivity points towards the predicted formation of a charge density wave (CDW) phase, which is a manifestation of periodic modulation of the electron density. This provides more details toward understanding the role of electrons in the phase transformation.
Keywords: Carrier dynamics; THz spectroscopy; Charge density wave