Universität zu Köln

Reinhoffer, Chris (2024). Terahertz-Induced Dynamics in Strongly Correlated and Magnetic Materials. PhD thesis, Universität zu Köln.

PDF Thesis_Reinhoffer_Published.pdf Download (3MB)

Abstract

This thesis explores the use of high-intensity terahertz (THz) pulses to uncover new physical phenomena in various materials. It investigates the nonlinear conductivity of the transition metal oxide (Sr,Ca)RuO3, revealing strong third harmonic generation linked to electron transport and heavy quasiparticles. In the superconductor MgB2, THz pulses probe the elusive Higgs mode using harmonic generation in magnetic fields. The ferrimagnetic garnet (Gd,Bi)3Fe5O12 displays tunable magnetization dynamics influenced by cavity effects and Zeeman torque. These findings enhance our understanding of THz spectroscopy and its applications in material science.

Item Type:	Thesis (PhD thesis)
Creators:	Creators Email ORCID ORCID Put Code Reinhoffer, Chris UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-737355
Date:	2024
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	Natural sciences and mathematics Physics
Uncontrolled Keywords:	Keywords Language Physics UNSPECIFIED Terahertz UNSPECIFIED Condensed matter UNSPECIFIED Strong correlation UNSPECIFIED Superconductor UNSPECIFIED
Date of oral exam:	13 September 2024
Referee:	Name Academic Title van Loosdrecht, Paul H. M. Prof. Dr. Ir. Johnson, Steven Prof. Dr.
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/73735