{"id":224551,"date":"2025-11-05T05:31:07","date_gmt":"2025-11-05T11:31:07","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/11\/photoinduced-non-reciprocal-magnetism-effectively-violates-newtons-third-law"},"modified":"2025-11-05T05:31:07","modified_gmt":"2025-11-05T11:31:07","slug":"photoinduced-non-reciprocal-magnetism-effectively-violates-newtons-third-law","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/11\/photoinduced-non-reciprocal-magnetism-effectively-violates-newtons-third-law","title":{"rendered":"Photoinduced non-reciprocal magnetism effectively violates Newton\u2019s third law"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/photoinduced-non-reciprocal-magnetism-effectively-violates-newtons-third-law2.jpg\"><\/a><\/p>\n<p>A theoretical framework predicts the emergence of non-reciprocal interactions that effectively violate Newton\u2019s third law in solids using light, report researchers from Japan. They demonstrate that by irradiating light of a carefully tuned frequency onto a magnetic metal, one can induce a torque that drives two magnetic layers into a spontaneous, persistent \u201cchase-and-run\u201d rotation. This work opens a new frontier in non-equilibrium materials science and suggests novel applications in light-controlled quantum materials.<\/p>\n<p>In equilibrium, <a href=\"https:\/\/phys.org\/tags\/physical+systems\/\" rel=\"tag\" class=\"\">physical systems<\/a> obey the law of action and reaction as per the free energy minimization principle. However, in non-equilibrium systems such as biological or active matter\u2014interactions that effectively violate this law\u2014the so-called non-reciprocal interactions are common.<\/p>\n<p>For instance, the brain comprises inhibitory and excitatory neurons that interact non-reciprocally; the interaction between predator and prey is asymmetric, and colloids immersed in an optically active media demonstrate non-reciprocal interactions as well. A natural question arises: Can one implement such non-reciprocal interaction in solid-state electronic systems?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A theoretical framework predicts the emergence of non-reciprocal interactions that effectively violate Newton\u2019s third law in solids using light, report researchers from Japan. They demonstrate that by irradiating light of a carefully tuned frequency onto a magnetic metal, one can induce a torque that drives two magnetic layers into a spontaneous, persistent \u201cchase-and-run\u201d rotation. This [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,47,1617],"tags":[],"class_list":["post-224551","post","type-post","status-publish","format-standard","hentry","category-biological","category-neuroscience","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/224551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=224551"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/224551\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=224551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=224551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=224551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}