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DS: Fachverband Dünne Schichten

DS 20: Poster II

DS 20.36: Poster

Donnerstag, 21. März 2024, 18:00–20:30, Poster D

Quantum Corrections to the Transport Properties in Thin Films of BaPbO₃ — •Alexander Schmid, Robert Bartel, Patrick Seiler, Thilo Kopp, and German Hammerl — Chair of Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg

The paper reports on the characterization of transport properties of epitaxial BaPbO₃ thin films grown on SrTiO₃ by pulsed laser deposition, taken at low temperatures and high magnetic fields.

The electric resistance in these films shows deviations from classical transport behavior at low temperature due to dimensional effects and pronounced spin-orbit coupling. Such corrections to the classical electric resistance can be understood in the framework of weak localization and electron-electron interaction [1]. Considering both of these impurity-driven quantum effects is essential to quantitatively understand the electric transport in BaPbO₃ thin films [2].

Here, we present recent results regarding the influence of a systematical change of the oxygen background pressure during growth of BaPbO₃ thin films by pulsed laser deposition on the quantum corrections to the electric resistance at low temperatures [3].

[1] P. Seiler, R. Bartel, T. Kopp, G. Hammerl, Phys. Rev. B 100, 165402 (2019). [2] R. Bartel, E. Lettl, P. Seiler, T. Kopp, G. Hammerl, physica stat. sol. (b) 259, 2100154, (2021). [3] A. Schmid, Master’s Thesis, University of Augsburg (2023).

Keywords: Weak Antilocalization; BaPbO3; Quantuminterference