{"id":2182,"date":"2021-01-26T09:18:24","date_gmt":"2021-01-26T09:18:24","guid":{"rendered":"https:\/\/www.polimix.fisi.polimi.it\/?p=2182"},"modified":"2021-01-26T10:10:29","modified_gmt":"2021-01-26T10:10:29","slug":"large-polarons-as-key-quasiparticles-in-srtio3-and-srtio3-based-heterostructures","status":"publish","type":"post","link":"https:\/\/www.polimix.fisi.polimi.it\/?p=2182","title":{"rendered":"Large Polarons as Key Quasiparticles in SrTiO3 and SrTiO3-Based Heterostructures"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2182\" class=\"elementor elementor-2182\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f5b036a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f5b036a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0b867bc\" data-id=\"0b867bc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c6fd587 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c6fd587\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-2316b3d\" data-id=\"2316b3d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3dd4026 elementor-widget elementor-widget-text-editor\" data-id=\"3dd4026\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/PhysRevLett.125.126401\">Large Polarons as Key Quasiparticles in SrTiO3 and SrTiO3-Based Heterostructures<\/a><\/p><p>Despite its simple structure and low degree of electronic correlation,\u00a0SrTiO3 (STO) features collective phenomena linked to charge transport and, ultimately, superconductivity, that are not yet fully explained. Thus, a better insight into the nature of the quasiparticles shaping the electronic and conduction properties of STO is needed. We studied the low-energy excitations of bulk STO and of the LaAlO3\/SrTiO3 two-dimensional electron gas (2DEG) by Ti\u00a0L3\u00a0edge resonant inelastic x-ray scattering. In all samples, we find the hallmark of polarons in the form of intense\u00a0dd\u00a0+\u00a0phonon\u00a0excitations, and a decrease of the LO3-mode electron-phonon coupling when going from insulating to highly conducting STO single crystals and heterostructures. Both results are attributed to the dynamic screening of the large polaron self-induced polarization, showing that the low-temperature physics of STO and STO-based 2DEGs is dominated by large polaron quasiparticles.<\/p><p>Phys. Rev. Lett. 125, 126401 (2020)\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-0d6247d\" data-id=\"0d6247d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-61218e9 elementor-widget elementor-widget-image\" data-id=\"61218e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"719\" src=\"https:\/\/www.polimix.fisi.polimi.it\/wp-content\/uploads\/2021\/01\/STO.png\" class=\"attachment-large size-large wp-image-922\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Large Polarons as Key Quasiparticles in SrTiO3 and SrTiO3-Based Heterostructures Despite its simple structure and low degree of electronic correlation,\u00a0SrTiO3 (STO) features collective phenomena linked to charge transport and, ultimately, superconductivity, that are not yet fully explained. Thus, a better insight into the nature of the quasiparticles shaping the electronic and conduction properties of STO [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":2196,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-2182","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications"],"_links":{"self":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts\/2182","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2182"}],"version-history":[{"count":18,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts\/2182\/revisions"}],"predecessor-version":[{"id":2212,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/posts\/2182\/revisions\/2212"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=\/wp\/v2\/media\/2196"}],"wp:attachment":[{"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.polimix.fisi.polimi.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}