{"id":3359,"date":"2021-10-19T23:37:43","date_gmt":"2021-10-19T21:37:43","guid":{"rendered":"https:\/\/equipes.lps.u-psud.fr\/sqm\/?p=3359"},"modified":"2021-10-20T23:05:06","modified_gmt":"2021-10-20T21:05:06","slug":"classical-kagome-spin-liquid","status":"publish","type":"post","link":"https:\/\/equipes.lps.u-psud.fr\/sqm\/classical-kagome-spin-liquid\/","title":{"rendered":"A S=5\/2 classical kagome spin liquid with a 1\/3-plateau"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/LiFePO_onekagome_tight-2.jpg\" alt=\"\" class=\"wp-image-3377\" width=\"319\" height=\"283\" srcset=\"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/LiFePO_onekagome_tight-2.jpg 781w, https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/LiFePO_onekagome_tight-2-300x266.jpg 300w, https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/LiFePO_onekagome_tight-2-768x681.jpg 768w\" sizes=\"auto, (max-width: 319px) 100vw, 319px\" \/><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/image-4.png\" alt=\"\" class=\"wp-image-3376\" width=\"358\" height=\"316\" srcset=\"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/image-4.png 507w, https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-content\/uploads\/sites\/13\/2021\/10\/image-4-300x266.png 300w\" sizes=\"auto, (max-width: 358px) 100vw, 358px\" \/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The new material Li<sub>9<\/sub>Fe<sub>3<\/sub>(P<sub>2<\/sub>O<sub>7<\/sub>)<sub>3<\/sub>(PO<sub>4<\/sub>)<sub>2<\/sub> is a rare example of a classical Heisenberg kagom\u00e9 antiferromagnet that we have investigated using Nuclear Magnetic Resonance and magnetization measurements down to low temperatures. Our measurements reveal a characteristic magnetization plateau at 1\/3 of the saturation magnetization below T \u223c 5 K. While this was predicted a long time ago, a clear experimental proof was still missing due to the scarcity of suitable compounds: because of their large antiferromagnetic interaction J \u223c 600 K, they all require unattainable applied magnetic fields in order to reach this 1=3 plateau! Furthermore, our <sup>31<\/sup>P NMR measurements indicates the development of anisotropic short-range correlations concomitantly with a gapless spin-lattice relaxation time T1 \u223c k<sub>B<\/sub>T=\u210fS, which may point to the presence of a semiclassical nematic spin-liquid state, also predicted for the Heisenberg kagome antiferromagnetic model.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DOI: <a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.127.157202\">https:\/\/doi.org\/10.1103\/PhysRevLett.127.157202<\/a><br>Ref: E. Kermarrec , R. Kumar, G. Bernard, R. H\u00e9naff, P. Mendels, F. Bert, P. L. Paulose, B. K. Hazra, and B. Koteswararao<br>       Phys. Rev. Lett. 127, 157202 (2021)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The new material Li9Fe3(P2O7)3(PO4)2 is a rare example of a classical Heisenberg kagom\u00e9 antiferromagnet that we have investigated using Nuclear Magnetic Resonance and magnetization measurements down to low temperatures. Our &#8230;<\/p>\n","protected":false},"author":24,"featured_media":3367,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-3359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-art"],"_links":{"self":[{"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/posts\/3359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/comments?post=3359"}],"version-history":[{"count":7,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/posts\/3359\/revisions"}],"predecessor-version":[{"id":3385,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/posts\/3359\/revisions\/3385"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/media\/3367"}],"wp:attachment":[{"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/media?parent=3359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/categories?post=3359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/sqm\/wp-json\/wp\/v2\/tags?post=3359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}