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MA: Fachverband Magnetismus

MA 3: Complex Magnetic Oxides

MA 3.1: Vortrag

Montag, 9. März 2026, 09:30–09:45, POT/0112

Twisted planar freestanding La0.7Sr0.3MnO3 junctions — •Alejandro Martín Merodio, Victor Rouco, Fernando Gallego, David Sanchez-Manzano, Carlos León, and Jacobo Santamaria — GFMC, Dpto. de Física de Materiales, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040 Madrid, Spain

The recent realization of membranes of transition metal oxides has enabled their mechanical assembly in twisted bilayers opening avenues to wards oxide twistronics. The ferroic orders hosted by transition metal oxides, many of which are stable at room temperature, offer exciting opportunities for the search of chiral ferroic properties in twisted ox ide membranes. In this work we present the growth, fabrication and characterization of twisted stacks made of La0.7Sr0.3MnO3 (LSMO), a half-metallic ferromagnetic perovskite with highly tunable properties. We have studied the temperature dependent magnetotransport across the interface of two twisted LSMO membranes for different twisting angles. These samples exhibit a large low temperature magnetoresistance MR up to 32% which switches abruptly at small (10 mT) magnetic fields. These MR values are well above the 0,01% AMR typically observed in single LSMO flakes. This approach allows exploring material combinations which are not possible in epitaxial heterostructures and opens promising avenues towards oxide based CMOS compatible spintronic devices.

Keywords: Complex oxides; Freestanding membranes; Freestanding ferromagnets