{"id":401,"date":"2022-10-03T17:10:42","date_gmt":"2022-10-03T21:10:42","guid":{"rendered":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/?p=401"},"modified":"2022-10-04T15:10:04","modified_gmt":"2022-10-04T19:10:04","slug":"current-induced-switching-of-antiferromagnet-facilitated-by-magnetic-phase-transition","status":"publish","type":"post","link":"https:\/\/sciences.ucf.edu\/physics\/afmspin\/current-induced-switching-of-antiferromagnet-facilitated-by-magnetic-phase-transition\/","title":{"rendered":"Current-induced Switching of Antiferromagnet Facilitated by Magnetic Phase Transition"},"content":{"rendered":"

\"\"<\/p>\n

Owing to the extremely large exchange energy barriers, it has been a fundamental challenge to switch the Neel order of AFM systems using energy-efficient current-induced torques. In FeRh alloy and similar AFM metals, however, there exists an AFM-FM phase transition at about room temperature. PI-Cheng\u2019s group has theoretically predicted and numerically verified that this phase transition can facilitate the Neel order switching process and reduce the threshold current density. When a current is applied to FeRh, a transient heating triggers the AFM-FM phase transition such that FeRh temporarily becomes a ferromagnet which can be switched by a much lower current density. Once the current is turned off, the material quickly retrieves the AFM state but with a 90-degree rotation of its Neel vector. The physical picture has been qualitatively confirmed by an experiment conducted by the Device Research Lab at UCLA.<\/p>\n

This article has been published in Nature Communications and is available here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Owing to the extremely large exchange energy barriers, it has been a fundamental challenge to switch the Neel order of AFM systems using energy-efficient current-induced torques. In FeRh alloy and Continue Reading →<\/a><\/p>\n","protected":false},"author":84,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[7],"tags":[],"class_list":["post-401","post","type-post","status-publish","format-standard","hentry","category-publications"],"yoast_head":"\nCurrent-induced Switching of Antiferromagnet Facilitated by Magnetic Phase Transition -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sciences.ucf.edu\/physics\/afmspin\/current-induced-switching-of-antiferromagnet-facilitated-by-magnetic-phase-transition\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Current-induced Switching of Antiferromagnet Facilitated by Magnetic Phase Transition -\" \/>\n<meta property=\"og:description\" content=\"Owing to the extremely large exchange energy barriers, it has been a fundamental challenge to switch the Neel order of AFM systems using energy-efficient current-induced torques. 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