{"id":4080,"date":"2025-03-04T09:52:00","date_gmt":"2025-03-04T09:52:00","guid":{"rendered":"https:\/\/www.polimix.fisi.polimi.it\/?p=4080"},"modified":"2025-03-04T09:55:15","modified_gmt":"2025-03-04T09:55:15","slug":"origin-of-magnetism-in-a-supposedly-nonmagnetic-osmium-oxide","status":"publish","type":"post","link":"https:\/\/www.polimix.fisi.polimi.it\/?p=4080","title":{"rendered":"Origin of Magnetism in a Supposedly Nonmagnetic Osmium Oxide"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4080\" class=\"elementor elementor-4080\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-47ca9a8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"47ca9a8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1cf904d\" data-id=\"1cf904d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8289d8d elementor-widget elementor-widget-text-editor\" data-id=\"8289d8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>The Hidden Magnetism of Osmium Oxide Unveiled<\/strong><\/p><p>The study of spin-orbit-coupled Mott insulators has unveiled surprising electronic and magnetic phenomena in 5d transition metal compounds. One such material, the double perovskite <strong>Ba\u2082NaOsO\u2086<\/strong>, has long been considered nonmagnetic due to the expected cancellation of its spin and orbital angular momenta. However, new insights from a combination of <strong>resonant inelastic X-ray scattering (RIXS), X-ray absorption spectroscopy (XAS), and magnetic circular dichroism (XMCD)<\/strong> have revealed a different scenario.<\/p><p>In a collaborative effort involving researchers from <strong>Diamond Light Source, ESRF, DESY, and multiple academic institutions<\/strong>, our team has demonstrated that strong <strong>spin-orbit coupling, covalency, and Jahn-Teller distortions<\/strong> collectively contribute to an unexpected <strong>finite magnetic moment<\/strong> in this system. This study provides direct experimental evidence of Jahn-Teller distortions at room temperature in the form of the so-called dynamic Jahn-Teller effect suggesting in Ba\u2082NaOsO\u2086, which makes its observation via conventional techniques elusive.<\/p><p>Our findings challenge the previous assumptions about the electronic structure of 5<em>d<\/em>\u00b9 systems and highlight the intricate interplay of spin, orbital, and lattice degrees of freedom. The results open new perspectives for understanding magnetism in <strong>spin-orbit-coupled Mott insulators<\/strong> and for the magnetism of double perovskites with nominal <em>d<\/em><sup>1 <\/sup>electronic configuration.<\/p><p>Read the full paper in <em>Physical Review Letters<\/em>: <a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.133.066501\">DOI: 10.1103\/PhysRevLett.133.066501<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The Hidden Magnetism of Osmium Oxide Unveiled The study of spin-orbit-coupled Mott insulators has unveiled surprising electronic and magnetic phenomena in 5d transition metal compounds. One such material, the double perovskite Ba\u2082NaOsO\u2086, has long been considered nonmagnetic due to the expected cancellation of its spin and orbital angular momenta. However, new insights from a combination [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":4081,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[30,18,31,32,33],"class_list":["post-4080","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications","tag-magnetism","tag-rixs","tag-spin-orbit-coupling","tag-xas","tag-xmcd"],"_links":{"self":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts\/4080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4080"}],"version-history":[{"count":4,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts\/4080\/revisions"}],"predecessor-version":[{"id":4085,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts\/4080\/revisions\/4085"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/media\/4081"}],"wp:attachment":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}