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HL: Fachverband Halbleiterphysik
HL 29: Poster II
HL 29.85: Poster
Dienstag, 18. März 2025, 18:00–20:00, P1
Magnetotransport in the correlated metal CaVO3 — •Olivio Chiatti1, Mahni Müller1, Maria Espinosa1, Tatiana Kuznetsova2, Roman Engel-Herbert2,3, and Saskia F. Fischer1,4 — 1Novel Materials Group, Humboldt-Universität zu Berlin, 10099 Berlin, Germany — 2Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA — 3Paul-Drude-Institut für Festkörperelektronik, 10117 Berlin, Germany — 4Center for the Science of Materials Berlin, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
Transparent conductive materials are in great demand in the optoelectronic industry for their high-performance and cost-effectiveness. Enhancing the carrier effective mass through strong electron-electron interactions in correlated metals is a promising approach to achieve both high-optical transparency and high-electrical conductivity [1].
Here, we study the electric transport properties of thin CaVO3 films grown on LaAlO3 substrates by hybrid molecular beam epitaxy, with residual resistivity ratio (RRR) up to 98 [2]. Magnetoresistance and Hall measurements were performed between 50 mK and 300 K. Films with high RRR show nonlinear Hall resistivities and linear magnetoresistance below 40 K. Shubnikov-de Haas oscillations are also observed for magnetic fields above 6 T. The application of a multi-carrier model and the complex Fermi surface of CaVO3 are discussed.
[1] Zhang et al., Nature Materials 15, 204 (2016)
[2] Kuznetsova et al., APL Materials 11, 041120 (2023)
Keywords: Correlated metal; Magnetotransport; Transparent conducting oxide