{"id":13991,"date":"2025-10-09T10:09:56","date_gmt":"2025-10-09T08:09:56","guid":{"rendered":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/?p=13991"},"modified":"2025-10-09T10:10:32","modified_gmt":"2025-10-09T08:10:32","slug":"altermagnetism-a-discovery-that-could-transform-electronics","status":"publish","type":"post","link":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/2025\/10\/09\/altermagnetism-a-discovery-that-could-transform-electronics\/","title":{"rendered":"Altermagnetism: a discovery that could transform electronics"},"content":{"rendered":"<p><strong><u>Publication : <\/u><\/strong><em>Badura, W. H. Campos, V. K. Bharadwaj, I. Kounta, <u>L. Michez<\/u>, M. Petit, J. Rial, M. Leivisk\u00e4, <u>V. Baltz<\/u>, F. Krizek, D. Kriegner, J. Zeleny, J. Zemen, S. Telkamp, S. Sailler, M. Lammel, R. J. Ubiergo, A. Birk Hellenes, R. Gonzalez-Hernandez, J. Sinova, T. Jungwirth, S. T. B. Goennenwein, L. Smejkal, H. Reichlova<\/em><\/p>\n<p><em>Observation of the anomalous Nernst effect in altermagnetic candidate <\/em><em>Mn<sub>5<\/sub>Si<sub>3<\/sub><\/em><\/p>\n<p>Nature Communications <strong>16<\/strong>, 7111 (2025)<\/p>\n<p><em>DOI\u00a0: <\/em><a href=\"https:\/\/doi.org\/10.1038\/s41467-025-62331-7\">10.1038\/s41467-025-62331-7<\/a><\/p>\n<p>The digital revolution, a driving force behind societal and economic transformation, now depends on ever more powerful and energy-efficient electronics. In this context, the discovery of altermagnetic materials represents a remarkable breakthrough for spintronics\u2014a field of electronics recognized in the French national strategy as one of the key solutions for developing more frugal and agile digital technologies. These disruptive materials combine the assets of ferromagnets\u2014their ability to spin-polarize electrical currents\u2014and antiferromagnets\u2014their robustness against magnetic fields and ultrafast dynamics in the terahertz range. This breakthrough paves the way for spintronic devices that are faster, denser, and more sustainable.<\/p>\n<p>Among the hundreds of predicted altermagnetic compounds, only four have been experimentally confirmed to date. Mn\u2085Si\u2083 stands out due to its composition of abundant, low-cost elements with weak spin-orbit coupling, allowing its spin-split bands to be attributed to purely non-relativistic effects arising from the arrangement of its magnetic moments relative to its crystalline symmetries. As part of a Franco-German-Czech collaboration, the SPIXY team at CINaM has uncovered several key signatures of altermagnetism in epitaxial thin films of Mn\u2085Si\u2083: a validated theory, a strong anomalous Hall effect in the absence of magnetization or external magnetic fields, and a pronounced anisotropy of this effect directly linked to the material crystallinity. In this new publication, we report\u2014for the first time in an altermagnetic material\u2014the spontaneous presence of the anomalous Nernst effect. This work demonstrates the potential of an altermagnetic material composed of light, non-toxic elements for applications in thermoelectrics and spin-caloritronics. It also fills a long-standing gap by revealing the spontaneous anomalous Nernst effect in collinear compensated magnets, thereby opening new avenues for sustainable and high-performance spintronics.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-14003\" src=\"https:\/\/www.cinam.univ-mrs.fr\/cinam\/wp-content\/uploads\/2025\/10\/Fait_marquant2025_SPIXY-2-300x131.png\" alt=\"\" width=\"300\" height=\"131\" srcset=\"https:\/\/www.cinam.univ-mrs.fr\/cinam\/wp-content\/uploads\/2025\/10\/Fait_marquant2025_SPIXY-2-300x131.png 300w, https:\/\/www.cinam.univ-mrs.fr\/cinam\/wp-content\/uploads\/2025\/10\/Fait_marquant2025_SPIXY-2-1024x447.png 1024w, https:\/\/www.cinam.univ-mrs.fr\/cinam\/wp-content\/uploads\/2025\/10\/Fait_marquant2025_SPIXY-2-768x335.png 768w, https:\/\/www.cinam.univ-mrs.fr\/cinam\/wp-content\/uploads\/2025\/10\/Fait_marquant2025_SPIXY-2-1536x670.png 1536w, https:\/\/www.cinam.univ-mrs.fr\/cinam\/wp-content\/uploads\/2025\/10\/Fait_marquant2025_SPIXY-2-2048x894.png 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new publication in Nanomaterials Department<\/p>\n","protected":false},"author":16,"featured_media":14002,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[31],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts\/13991"}],"collection":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/comments?post=13991"}],"version-history":[{"count":5,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts\/13991\/revisions"}],"predecessor-version":[{"id":14006,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/posts\/13991\/revisions\/14006"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/media\/14002"}],"wp:attachment":[{"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/media?parent=13991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/categories?post=13991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cinam.univ-mrs.fr\/cinam\/en\/wp-json\/wp\/v2\/tags?post=13991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}