Observation of a spontaneous anomalous Hall response in the Mn5Si3 d-wave altermagnet candidate

Reichlová, Helena; Seeger, Rafael Lopes; González‐Hernández, Rafael; Kounta, Ismaïla; Schlitz, Richard; Kriegner, Dominik; Ritzinger, Philipp; Lammel, Michaela; Leiviskä, Miina; Hellenes, Anna Birk; Olejník, K.; Petřı́ček, V.; Doležal, Petr; Horák, Lukáš; Schmoranzerová, Eva; Baďura, Antonín; Bertaina, Sylvain; Thomas, Andy; Baltz, V.; Michez, Lisa; Sinova, Jairo; Goennenwein, Sebastian T. B.; Jungwirth, T.; Šmejkal, Libor

doi:10.1038/s41467-024-48493-w

articleNature CommunicationsJun 11, 2024GOLD OA

Observation of a spontaneous anomalous Hall response in the Mn5Si3 d-wave altermagnet candidate

HRHelena Reichlová RLRafael Lopes Seeger RGRafael González‐Hernández IKIsmaïla Kounta RSRichard Schlitz

Complexity and Topology in Quantum Matter · FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic · +16 more institutions

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Abstract

Abstract Phases with spontaneous time-reversal ( $${{{{{{{\mathcal{T}}}}}}}}$$ T ) symmetry breaking are sought after for their anomalous physical properties, low-dissipation electronic and spin responses, and information-technology applications. Recently predicted altermagnetic phase features an unconventional and attractive combination of a strong $${{{{{{{\mathcal{T}}}}}}}}$$ T -symmetry breaking in the electronic structure and a zero or only weak-relativistic magnetization. In this work, we experimentally observe the anomalous Hall effect, a prominent representative of the $${{{{{{{\mathcal{T}}}}}}}}$$ T -symmetry breaking responses, in the absence of an external magnetic field in epitaxial thin-film…

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Topics

Keywords

Condensed matter physics
Hall effect
Physics
Magnetization
Symmetry (geometry)
Symmetry breaking
Phase (matter)
Magnetic field

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