{"id":243,"date":"2016-08-05T17:29:24","date_gmt":"2016-08-05T17:29:24","guid":{"rendered":"http:\/\/girsh.rutgers.edu\/?p=243"},"modified":"2018-09-13T19:32:36","modified_gmt":"2018-09-13T19:32:36","slug":"stress-induced-nematicity-in-eufe2as2-studied-by-raman-spectroscopy","status":"publish","type":"post","link":"https:\/\/girsh.rutgers.edu\/index.php\/2016\/08\/05\/stress-induced-nematicity-in-eufe2as2-studied-by-raman-spectroscopy\/","title":{"rendered":"Stress-induced nematicity in EuFe2As2 studied by Raman spectroscopy"},"content":{"rendered":"<p style=\"text-align: left;\"><strong><img fetchpriority=\"high\" decoding=\"async\" class=\" wp-image-203 alignright\" src=\"http:\/\/girsh.rutgers.edu\/wp-content\/uploads\/2016\/08\/PRBv94i102_Final.png\" alt=\"fig1a\" width=\"338\" height=\"395\" \/>Authors:<\/strong> W.-L. Zhang, Athena S. Sefat, H. Ding, P. Richard, and G. Blumberg<\/p>\n<p style=\"text-align: left;\"><strong>Abstract:<\/strong><\/p>\n<div data-canvas-width=\"233.529888\">We use polarized Raman scattering to study the structural phase transition in EuFe<sub>2<\/sub>As<sub>2<\/sub>, the parent compound of the 122-ferropnictide superconductors. The in-plane lattice anisotropy is characterized by measurements of the side surface with different strains induced by different preparation methods. We show that while a fine surface polishing leaves the samples free of residual internal strain, in which case the onset of the C<sub>4<\/sub> symmetry breaking is observed at the nominal structural phase transition temperature T<sub>S<\/sub>, cutting the side surface induce a permanent fourfold rotational symmetry breaking spanning tens of degrees above T<sub>S<\/sub>.<\/div>\n<div data-canvas-width=\"233.529888\"><\/div>\n<ul>\n<li><em><a href=\"http:\/\/girsh.rutgers.edu\/wp-content\/uploads\/2016\/03\/PhysRevB.94.014513.pdf\" target=\"_blank\">Read article here (PDF)<\/a><\/em><\/li>\n<li><em><a href=\"http:\/\/journals.aps.org\/prb\/kaleidoscope\/prb\/94\/1\/014513\" target=\"_blank\">Kaleidoscope<\/a><\/em><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Authors: W.-L. Zhang, Athena S. Sefat, H. Ding, P. Richard, and G. Blumberg Abstract: We use polarized Raman scattering to study the structural phase transition in EuFe2As2, the parent compound of the 122-ferropnictide superconductors. The in-plane lattice anisotropy is characterized by measurements of the side surface with different strains induced by different preparation methods. We &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/girsh.rutgers.edu\/index.php\/2016\/08\/05\/stress-induced-nematicity-in-eufe2as2-studied-by-raman-spectroscopy\/\"> <span class=\"screen-reader-text\">Stress-induced nematicity in EuFe2As2 studied by Raman spectroscopy<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/posts\/243"}],"collection":[{"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/comments?post=243"}],"version-history":[{"count":9,"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/posts\/243\/revisions"}],"predecessor-version":[{"id":800,"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/posts\/243\/revisions\/800"}],"wp:attachment":[{"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/media?parent=243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/categories?post=243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/girsh.rutgers.edu\/index.php\/wp-json\/wp\/v2\/tags?post=243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}