{"id":7866,"date":"2016-02-15T17:31:24","date_gmt":"2016-02-15T17:31:24","guid":{"rendered":"http:\/\/vps468643.ovh.net.s216418.gridserver.com\/?p=7866"},"modified":"2016-02-15T17:31:24","modified_gmt":"2016-02-15T17:31:24","slug":"charge-density-wave-fluctuations-in-la-2%e2%88%92-x-sr-x-cuo-4-and-their-competition-with-superconductivity","status":"publish","type":"post","link":"https:\/\/senngroup.com\/charge-density-wave-fluctuations-in-la-2%e2%88%92-x-sr-x-cuo-4-and-their-competition-with-superconductivity\/","title":{"rendered":"Charge density wave fluctuations in La 2\u2212 x Sr x CuO 4 and their competition with superconductivity"},"content":{"rendered":"<p><a href=\"http:\/\/journals.aps.org\/prb\/abstract\/10.1103\/PhysRevB.89.224513\">T. P. Croft, C. Lester, M. S. Senn, A. Bombardi, and S. M. Hayden, Phys. Rev. B 89 (2014), 224513 <\/a><\/p>\n<p>We report hard (14 keV) x-ray diffraction measurements on three compositions (<span class=\"aps-inline-formula\"><span id=\"MathJax-Element-4-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-19\" class=\"math\"><span id=\"MathJax-Span-20\" class=\"mrow\"><span id=\"MathJax-Span-21\" class=\"mrow\"><span id=\"MathJax-Span-22\" class=\"mi\">x<\/span><span id=\"MathJax-Span-23\" class=\"mo\">=<\/span><span id=\"MathJax-Span-24\" class=\"mn\">0.11<\/span><span id=\"MathJax-Span-25\" class=\"mo\">,<\/span><span id=\"MathJax-Span-26\" class=\"mn\">0.12<\/span><span id=\"MathJax-Span-27\" class=\"mo\">,<\/span><span id=\"MathJax-Span-28\" class=\"mn\">0.13<\/span><span id=\"MathJax-Span-29\" class=\"mo\">)<\/span><\/span><\/span>\u00a0<\/span><\/span> <\/span> of the high-temperature superconductor <span class=\"aps-inline-formula\"><span id=\"MathJax-Element-5-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-30\" class=\"math\"><span id=\"MathJax-Span-31\" class=\"mrow\"><span id=\"MathJax-Span-32\" class=\"msub\"><span id=\"MathJax-Span-33\" class=\"mtext\">La<\/span>\u00a0<span id=\"MathJax-Span-34\" class=\"mrow\"><span id=\"MathJax-Span-35\" class=\"mn\">2<\/span><span id=\"MathJax-Span-36\" class=\"mo\">\u2212<\/span><span id=\"MathJax-Span-37\" class=\"mi\">x<\/span><\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/span> <\/span><span class=\"aps-inline-formula\"><span id=\"MathJax-Element-6-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-38\" class=\"math\"><span id=\"MathJax-Span-39\" class=\"mrow\"><span id=\"MathJax-Span-40\" class=\"msub\"><span id=\"MathJax-Span-41\" class=\"mtext\">Sr<\/span>\u00a0<span id=\"MathJax-Span-42\" class=\"mi\">x<\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/span> <\/span><span class=\"aps-inline-formula\"><span id=\"MathJax-Element-7-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-43\" class=\"math\"><span id=\"MathJax-Span-44\" class=\"mrow\"><span id=\"MathJax-Span-45\" class=\"msub\"><span id=\"MathJax-Span-46\" class=\"mtext\">CuO<\/span>\u00a0<span id=\"MathJax-Span-47\" class=\"mn\">4<\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/span> <\/span>. All samples show charge density wave (CDW) order with onset temperatures in the range 51\u201380 K and ordering wave vectors close to (0.23,0,0.5). The CDW is strongest with the longest in-plane correlation length near 1\/8 doping. On entering the superconducting state the CDW is suppressed, demonstrating the strong competition between the charge order and superconductivity. CDW order coexists with incommensurate magnetic order and the wave vectors of the two modulations have the simple relationship <span class=\"aps-inline-formula\"><span id=\"MathJax-Element-8-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-48\" class=\"math\"><span id=\"MathJax-Span-49\" class=\"mrow\"><span id=\"MathJax-Span-50\" class=\"mrow\"><span id=\"MathJax-Span-51\" class=\"msub\"><span id=\"MathJax-Span-52\" class=\"mrow\"><span id=\"MathJax-Span-53\" class=\"mi\">\u03b4<\/span><\/span>\u00a0<span id=\"MathJax-Span-54\" class=\"mi\">charge<\/span>\u00a0<\/span><span id=\"MathJax-Span-55\" class=\"mo\">=<\/span><span id=\"MathJax-Span-56\" class=\"mn\">2<\/span><span id=\"MathJax-Span-57\" class=\"msub\"><span id=\"MathJax-Span-58\" class=\"mrow\"><span id=\"MathJax-Span-59\" class=\"mi\">\u03b4<\/span><\/span>\u00a0<span id=\"MathJax-Span-60\" class=\"mi\">spin<\/span>\u00a0<\/span><\/span><\/span>\u00a0<\/span><\/span> <\/span>. The intensity of the CDW Bragg peak tracks the intensity of the low-energy (quasielastic) spin fluctuations. We present a phase diagram of <span class=\"aps-inline-formula\"><span id=\"MathJax-Element-9-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-61\" class=\"math\"><span id=\"MathJax-Span-62\" class=\"mrow\"><span id=\"MathJax-Span-63\" class=\"msub\"><span id=\"MathJax-Span-64\" class=\"mtext\">La<\/span>\u00a0<span id=\"MathJax-Span-65\" class=\"mrow\"><span id=\"MathJax-Span-66\" class=\"mn\">2<\/span><span id=\"MathJax-Span-67\" class=\"mo\">\u2212<\/span><span id=\"MathJax-Span-68\" class=\"mi\">x<\/span><\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/span> <\/span><span class=\"aps-inline-formula\"><span id=\"MathJax-Element-10-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-69\" class=\"math\"><span id=\"MathJax-Span-70\" class=\"mrow\"><span id=\"MathJax-Span-71\" class=\"msub\"><span id=\"MathJax-Span-72\" class=\"mtext\">Sr<\/span>\u00a0<span id=\"MathJax-Span-73\" class=\"mi\">x<\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/span> <\/span><span class=\"aps-inline-formula\"><span id=\"MathJax-Element-11-Frame\" class=\"MathJax\"><span id=\"MathJax-Span-74\" class=\"math\"><span id=\"MathJax-Span-75\" class=\"mrow\"><span id=\"MathJax-Span-76\" class=\"msub\"><span id=\"MathJax-Span-77\" class=\"mtext\">CuO<\/span>\u00a0<span id=\"MathJax-Span-78\" class=\"mn\">4<\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/span> <\/span> including the pseudogap phase, CDW, and magnetic order.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T. P. Croft, C. Lester, M. S. Senn, A. Bombardi, and S. M. Hayden, Phys. Rev. B 89 (2014), 224513 We report hard (14 keV) x-ray diffraction measurements on three<br \/><a href=\"https:\/\/senngroup.com\/charge-density-wave-fluctuations-in-la-2%e2%88%92-x-sr-x-cuo-4-and-their-competition-with-superconductivity\/\" class=\"more\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":7867,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[64],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Charge density wave fluctuations in La 2\u2212 x Sr x CuO 4 and their competition with superconductivity - SENN GROUP<\/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:\/\/senngroup.com\/charge-density-wave-fluctuations-in-la-2\u2212-x-sr-x-cuo-4-and-their-competition-with-superconductivity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Charge density wave fluctuations in La 2\u2212 x Sr x CuO 4 and their competition with superconductivity - SENN GROUP\" \/>\n<meta property=\"og:description\" content=\"T. 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