{"id":951733,"date":"2026-11-04T01:38:09","date_gmt":"2026-11-04T01:38:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/au\/951733\/"},"modified":"2026-11-04T01:38:09","modified_gmt":"2026-11-04T01:38:09","slug":"detecting-an-eight-magnetic-pole-state-using-chiral-phonons","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/au\/951733\/","title":{"rendered":"Detecting An Eight Magnetic Pole State Using Chiral Phonons"},"content":{"rendered":"<p>The idea that magnetism doesn\u2019t necessarily always have a dipolar configuration is not a new one, but it\u2019s not an easy theory to find evidence for. Most recently a team of scientists at the University of Toronto used a new method involving vibrational energy in the form of phonons to <a href=\"https:\/\/www.artsci.utoronto.ca\/news\/u-t-physicists-identify-octupolar-magnetism-implications-quantum-technologies\" target=\"_blank\" rel=\"nofollow noopener\">find evidence for an octupolar magnetic order<\/a>.<\/p>\n<p>In the associated paper in\u00a0Physical Review Letters (paywalled, <a href=\"https:\/\/arxiv.org\/abs\/2506.18978\" target=\"_blank\" rel=\"nofollow noopener\">arXiv version<\/a>) by [Ruairidh Sutcliffe] et al. we can find more details on this method and what their findings may mean for various fields. Naturally, this is a quantum-level phenomenon that requires Raman spectroscopy to be detectable via said phonons.<\/p>\n<p>The materials investigated here are also somewhat exotic, ranging from actinides like NpO2 to transition metal oxides like Sr2MgReO6, while having on common strong spin-orbit coupling. Where the phonons come into play is that they can be used to indirectly measure crystal lattice distortions due to the pseudo-angular momentum assigned to the phonons.\u00a0This generates pseudo-chiral phonons which then show up in the Raman spectroscopy.<\/p>\n<p>Although finding evidence for octopolar magnetic order is interesting in itself, this way to measuring a crystal lattice\u2019s structure makes for another fascinating research tool that can be used to study many similar phenomenon.<\/p>\n<p>These quantum-level magnetic states could conceivably be used for anything from sensors to magnetic data storage, though any such research is unlikely to be commercialized any time soon.<\/p>\n","protected":false},"excerpt":{"rendered":"The idea that magnetism doesn\u2019t necessarily always have a dipolar configuration is not a new one, but it\u2019s&hellip;\n","protected":false},"author":2,"featured_media":951734,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[64,63,292,128],"class_list":["post-951733","post","type-post","status-publish","format-standard","has-post-thumbnail","category-physics","tag-au","tag-australia","tag-physics","tag-science"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/951733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/comments?post=951733"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/951733\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media\/951734"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media?parent=951733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/categories?post=951733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/tags?post=951733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}