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

Helena Reichlova (), Rafael Lopes Seeger, Rafael González-Hernández, Ismaila Kounta, Richard Schlitz, Dominik Kriegner, Philipp Ritzinger, Michaela Lammel, Miina Leiviskä, Anna Birk Hellenes, Kamil Olejník, Vaclav Petřiček, Petr Doležal, Lukas Horak, Eva Schmoranzerova, Antonín Badura, Sylvain Bertaina, Andy Thomas, Vincent Baltz, Lisa Michez, Jairo Sinova, Sebastian T. B. Goennenwein, Tomáš Jungwirth and Libor Šmejkal ()
Additional contact information
Helena Reichlova: Technische Universität Dresden
Rafael Lopes Seeger: Univ. Grenoble Alpes, CNRS, CEA, Grenoble INP, Spintec
Rafael González-Hernández: Universidad del Norte
Ismaila Kounta: Aix Marseille Univ, CNRS, CINAM, AMUTECH
Richard Schlitz: Technische Universität Dresden
Dominik Kriegner: Technische Universität Dresden
Philipp Ritzinger: Technische Universität Dresden
Michaela Lammel: Leibniz Institute for Solid State and Materials Research (IFW Dresden)
Miina Leiviskä: Univ. Grenoble Alpes, CNRS, CEA, Grenoble INP, Spintec
Anna Birk Hellenes: Johannes Gutenberg Universität Mainz
Kamil Olejník: Czech Academy of Sciences
Vaclav Petřiček: Czech Academy of Sciences
Petr Doležal: Charles University
Lukas Horak: Charles University
Eva Schmoranzerova: Charles University
Antonín Badura: Charles University
Sylvain Bertaina: Aix Marseille Univ, CNRS IM2NP-UMR
Andy Thomas: Technische Universität Dresden
Vincent Baltz: Univ. Grenoble Alpes, CNRS, CEA, Grenoble INP, Spintec
Lisa Michez: Aix Marseille Univ, CNRS, CINAM, AMUTECH
Jairo Sinova: Johannes Gutenberg Universität Mainz
Sebastian T. B. Goennenwein: Technische Universität Dresden
Tomáš Jungwirth: Czech Academy of Sciences
Libor Šmejkal: Czech Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-10

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 Mn5Si3 with a vanishingly small net magnetic moment. By symmetry analysis and first-principles calculations we demonstrate that the unconventional d-wave altermagnetic phase is consistent with the experimental structural and magnetic characterization of the Mn5Si3 epilayers, and that the theoretical anomalous Hall conductivity generated by the phase is sizable, in agreement with experiment. An analogy with unconventional d-wave superconductivity suggests that our identification of a candidate of unconventional d-wave altermagnetism points towards a new chapter of research and applications of magnetic phases.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-024-48493-w Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48493-w

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-48493-w

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().