{"id":91058,"date":"2019-05-21T10:42:25","date_gmt":"2019-05-21T17:42:25","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2019\/05\/a-method-to-determine-magnon-coherence-in-solid-state-devices"},"modified":"2019-05-21T10:42:25","modified_gmt":"2019-05-21T17:42:25","slug":"a-method-to-determine-magnon-coherence-in-solid-state-devices","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2019\/05\/a-method-to-determine-magnon-coherence-in-solid-state-devices","title":{"rendered":"A method to determine magnon coherence in solid-state devices"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/a-method-to-determine-magnon-coherence-in-solid-state-devices2.jpg\"><\/a><\/p>\n<p>A team of researchers at Utrecht University, the Norwegian University of Science and Technology and the University of Konstanz has recently proposed a new method to determine magnon coherence in solid-state devices. Their study, outlined in a paper published in <i>Physical Review Letters<\/i>, shows that cross-correlations of pure spin currents injected by a ferromagnet into two metal leads normalized by their dc value replicate the behavior of the second-order optical coherence function, referred to as g<sup><\/sup>, when magnons are driven far from equilibrium.<\/p>\n<p>\u201cConsider a big room full of people having a party,\u201d Akash Kamra, one of the researchers who carried out the study, told Phys.org. \u201cThese people can either behave as in a night club, bumping into each other in an uncoordinated way and with chaotic movements, or the party people might be directed by a common host, such as at a wedding party. Such a \u2018condensed\u2019 crowd of people moves swiftly without bumping into each other.\u201d<\/p>\n<p>Kamra draws an analogy between the party situations he described and magnons, <a href=\"https:\/\/phys.org\/tags\/quantum+particles\/\" rel=\"tag\" class=\"\">quantum particles<\/a> that correspond to a specific decrease in magnetic strength, traveling as a unit through a magnetic substance. In his analogy, an uncoordinated \u201cparty\u201d would occur if magnons are in a \u201cthermal\u201d state, while a coordinated one if they are in a \u201ccoherent\u201d or \u201ccondensed\u201d state. The coordinated movement of guests in the second type of party, on the other hand, would correspond to a superfluid flow, which is a manifestation of a remarkable state of matter: the condensate.<\/p>\n<p><a href=\"https:\/\/phys.org\/news\/2019-05-method-magnon-coherence-solid-state-devices.html\" target=\"_blank\" rel=\"noopener noreferrer\"><\/p>\n<div style=\"clear:both;\">Read more<\/div>\n<p><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A team of researchers at Utrecht University, the Norwegian University of Science and Technology and the University of Konstanz has recently proposed a new method to determine magnon coherence in solid-state devices. Their study, outlined in a paper published in Physical Review Letters, shows that cross-correlations of pure spin currents injected by a ferromagnet into [\u2026]<\/p>\n","protected":false},"author":513,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,1617],"tags":[],"class_list":["post-91058","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\/91058","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\/513"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=91058"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/91058\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=91058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=91058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=91058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}