Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 7: Poster Magnetism I

MA 7.55: Poster

Montag, 9. März 2026, 09:30–12:30, P2

Tuning Anomalous Hall Effect in a d-wave Altermagnet — •Sergio Rodríguez Fernández, Rodrigo Jaeschke Ubiergo, and Jairo Sinova — Johannes Gutenberg-Universität Mainz, Deutschland

Altermagnets are a novel class of collinear magnets that, despite being magnetically compensated, break time-reversal symmetry. Their electronic band structure shows spin splitting with characteristic d-, g-, or i-wave symmetry. Owing to their broken time-reversal symmetry, they have been shown, both theoretically and experimentally, to exhibit an Anomalous Hall Effect (AHE) that depends strongly on the orientation of the Néel order.

In this poster, we discuss the AHE in d-wave altermagnets. Using minimal models, symmetry analysis, and the Kubo response formalism, we show how the AHE emerges from different orientations of the Néel vector. We build our minimal models with focus on the tunnability of these responses, and we apply our approach to realistic candidate materials. Our work deepens the understanding of transport properties in altermagnets, contributing to their growing relevance in spintronics research.

Keywords: Altermagnets; Anomalous Hall Effect; d-wave altermagnet; Spintronics; Néel vector