{"id":227428,"date":"2025-12-19T01:32:55","date_gmt":"2025-12-19T07:32:55","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/12\/flat-fermi-surface-in-altermagnets-enables-quantum-limit-spin-currents"},"modified":"2025-12-19T01:32:55","modified_gmt":"2025-12-19T07:32:55","slug":"flat-fermi-surface-in-altermagnets-enables-quantum-limit-spin-currents","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/12\/flat-fermi-surface-in-altermagnets-enables-quantum-limit-spin-currents","title":{"rendered":"Flat Fermi surface in altermagnets enables quantum limit spin currents"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/flat-fermi-surface-in-altermagnets-enables-quantum-limit-spin-currents2.jpg\"><\/a><\/p>\n<p>The key feature of spintronic devices is their ability to use spin currents to transfer momentum, enabling low-energy, high-speed storage and logical signal control. These devices are usually manipulated by electric currents and fields. The charge-to-spin conversion efficiency (CSE) is a key metric for evaluating their performance.<\/p>\n<p>Now, scientists from the Institute of Metal Research (IMR) of the Chinese Academy of Sciences have proposed a new deep correlation between the spin splitting torque (SST) and the Fermi surface geometry, achieving a quantum limit of 100% in a system with a flat Fermi surface. These results were <a href=\"https:\/\/link.aps.org\/doi\/10.1103\/bf1n-sxdl\" target=\"_blank\">published<\/a> in <i>Physical Review Letters<\/i> on December 16.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The key feature of spintronic devices is their ability to use spin currents to transfer momentum, enabling low-energy, high-speed storage and logical signal control. These devices are usually manipulated by electric currents and fields. The charge-to-spin conversion efficiency (CSE) is a key metric for evaluating their performance. Now, scientists from the Institute of Metal Research [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,1617],"tags":[],"class_list":["post-227428","post","type-post","status-publish","format-standard","hentry","category-particle-physics","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/227428","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=227428"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/227428\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=227428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=227428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=227428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}