Altermagnetic Phase Transition in a Lieb Metal

Matteo Dürrnagel; Hendrik Hohmann; Atanu Maity; Jannis Seufert; Michael Klett; Lennart Klebl; Ronny Thomale

doi:10.1103/2g3v-z76q

Altermagnetic Phase Transition in a Lieb Metal

Matteo Dürrnagel ^*, Hendrik Hohmann ^*, Atanu Maity , Jannis Seufert , Michael Klett , Lennart Klebl , and Ronny Thomale ^†

Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany

^*These authors contributed equally to this work.
^†Contact author: ronny.thomale@uni-wuerzburg.de

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Phys. Rev. Lett. 135, 036502 – Published 15 July, 2025

DOI: https://doi.org/10.1103/2g3v-z76q

Abstract

We analyze the phase transition between a symmetric metallic parent state and itinerant altermagnetic order. The underlying mechanism we reveal in our microscopic model of electrons on a Lieb lattice does not involve orbital ordering, but derives from sublattice interference.

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Altermagnetic Phase Transition in a Lieb Metal

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Altermagnetic Phase Transition in a Lieb Metal

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