{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T08:01:52Z","timestamp":1793347312174,"version":"4.5.0"},"reference-count":50,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"6823","funder":[{"name":"CNRS"},{"name":"CEA"}],"content-domain":{"domain":["www.science.org"],"crossmark-restriction":true},"short-container-title":["Science"],"published-print":{"date-parts":[[2026,10,29]]},"abstract":"<jats:p>\n                    Altermagnets are compensated magnets with symmetry-enforced spin split bands. Direct spectroscopic evidence for their existence has been reported in several materials. For example, inelastic neutron scattering (INS) has recently been used to witness a splitting of magnon bands in MnTe that is compatible with altermagnetism. Here, we present polarized INS results on MnF\n                    <jats:sub>2<\/jats:sub>\n                    showing that it is altermagnetic. Our data reveal a splitting coming from the long-range dipolar coupling. Furthermore, using a domain-biased sample, the data reveal a nonzero chirality in the neutron scattering cross section that reverses the sign between the two magnon modes. It is this feature that clearly demonstrates altermagnetism in MnF\n                    <jats:sub>2<\/jats:sub>\n                    . This finding highlights the potential for polarized INS to characterize altermagnets through its sensitivity to fine structure in magnon spectra.\n                  <\/jats:p>","DOI":"10.1126\/science.aec2602","type":"journal-article","created":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T18:00:52Z","timestamp":1793296852000},"page":"544-548","update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":1,"title":["Altermagnetism revealed by polarized neutrons in MnF\n                    <sub>2<\/sub>"],"prefix":"10.1126","volume":"394","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1508-2363","authenticated-orcid":true,"given":"Quentin","family":"Faure","sequence":"first","affiliation":[{"name":"Laboratoire L\u00e9on Brillouin, CEA, CNRS, Universit\u00e9 Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0860-1321","authenticated-orcid":true,"given":"Dalila","family":"Bounoua","sequence":"additional","affiliation":[{"name":"Laboratoire L\u00e9on Brillouin, CEA, CNRS, Universit\u00e9 Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9437-434X","authenticated-orcid":true,"given":"Victor","family":"Bal\u00e9dent","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris-Saclay, CNRS, Laboratoire de Physique des Solides, Orsay, France."},{"name":"Institut universitaire de France (IUF)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2763-468X","authenticated-orcid":true,"given":"Arsen","family":"Gukasov","sequence":"additional","affiliation":[{"name":"Laboratoire L\u00e9on Brillouin, CEA, CNRS, Universit\u00e9 Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5322-7271","authenticated-orcid":true,"given":"V. Ovidiu","family":"Garlea","sequence":"additional","affiliation":[{"name":"Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Afonso","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Laboratoire L\u00e9on Brillouin, CEA, CNRS, Universit\u00e9 Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5961-0300","authenticated-orcid":true,"given":"Jeffrey G.","family":"Rau","sequence":"additional","affiliation":[{"name":"Department of Physics, University of Windsor, Sunset Avenue, Windsor, ON, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2169-0544","authenticated-orcid":true,"given":"Sylvain","family":"Petit","sequence":"additional","affiliation":[{"name":"Laboratoire L\u00e9on Brillouin, CEA, CNRS, Universit\u00e9 Paris-Saclay, CEA 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