Regensburg 2025 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 11: Superconductivity: Poster
TT 11.13: Poster
Montag, 17. März 2025, 15:00–18:00, P4
Nonlinear THz-spectroscopy of PdCoO2 and LBCO: Probing c-axis dynamics and collective excitations — •Shuhan Wang1, Tim Priessnitz2, Min-Jae Kim1,2, Liwen Feng1,2, Gideok Kim2, Bernhard Keimer2, and Stefan Kaiser1,2 — 1TUD Dresden University of Technology, Germany — 2Max Planck Institute for Solid State Research, Stuttgart, Germany
Layered quantum materials offer a unique platform for studying anisotropic transport and collective excitations. Using THz-High-Harmonics Generation, we investigate the c-axis responses of PdCoO2 and La2−xBax CuO4 (LBCO) grown on offcut substrates. PdCoO2 shows exceptionally large THz second harmonic and third harmonic generation [1] while LBCO shows distinct features linked the superconducting Higgs response and the Josephson plasma resonance. We will discuss the features referenced to the linear response of these systems measures with THz time domain spectroscopy.
[1] T. Priessnitz et al., arXiv:2409.07872
Keywords: nonlinear THz-spectroscopy; layered quantum material; c-axis responses