{"id":1881,"date":"2015-07-05T18:43:23","date_gmt":"2015-07-06T01:43:23","guid":{"rendered":"http:\/\/physikon.net\/?p=1881"},"modified":"2022-06-22T09:52:56","modified_gmt":"2022-06-22T16:52:56","slug":"1881","status":"publish","type":"post","link":"http:\/\/physikon.net\/?p=1881","title":{"rendered":"Thermal Properties: Evidence of quasi-normal excitations"},"content":{"rendered":"<p><!--more--><\/p>\n<hr \/>\n<p style=\"text-align: justify;\"><strong>Thermal Properties: Evidence of quasi-normal excitations<\/strong>, D. R. Harshman and J. D. Dow<\/p>\n<p style=\"text-align: justify;\">Previous interpretation of thermal conductivity data of YBa<sub>2<\/sub>Cu<sub>3<\/sub>O<sub>7<\/sub> in terms of <em>d<\/em>-wave superconductivity have created the impression that this experiment can only be successfully explained in terms of a <em>d<\/em>-wave model. Here we show that thermal conductivity data can be (better) explained in terms of <em>s<\/em>-wave hole-pairing, which also handles some outstanding problems with the <em>d<\/em>-wave interpretation, namely, muon spectra that are <em>s<\/em>-wave and specific heat data that that exhibit a zero-field linear-T term. The basic notion is that a high-temperature superconductor such as YBa<sub>2<\/sub>Cu<sub>3<\/sub>O<sub>7<\/sub> contains both superconducting and normal-like bands. The dominant superconducting bands are associated with BaO, and the CuO<sub>2<\/sub> bands are non-superconducting or only weakly superconducting.<\/p>\n<p style=\"text-align: justify;\">\n<table id=\"tablepress-9\" class=\"tablepress tablepress-id-9\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n\t<td class=\"column-1\"><a href=\"http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/T_C_sm1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/T_C_sm1-300x264.jpg\" alt=\"T_C_sm\" width=\"300\" height=\"264\" class=\"alignleft size-medium wp-image-1336\" srcset=\"http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/T_C_sm1.jpg 300w, http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/T_C_sm1-170x150.jpg 170w, http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/T_C_sm1-150x132.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\n<p align=\"justify\">Thermal conductivity divided by temperature (in mW\/K<sup>2<\/sup>-cm) of YBa<sub>2<\/sub>Cu<sub>3<\/sub>O<sub>y<\/sub> versus temperature-squared (in K<sup>2<\/sup>) for both the insulating (y = 6.0) and superconducting (y = 6.9) compounds.<\/p><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-9 from cache -->\n<p style=\"text-align: justify;\">D. R. Harshman and J. D. Dow, <a href=\"https:\/\/doi.org\/10.1142\/S0217979205028116\">Intern. J. of Mod. Phys. B <strong>19<\/strong>, 147 (2005)<\/a>.<\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1336,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,9],"tags":[],"class_list":["post-1881","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-existence-of-two-carrier-types","category-high-tc-superconductivity"],"_links":{"self":[{"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/posts\/1881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1881"}],"version-history":[{"count":11,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/posts\/1881\/revisions"}],"predecessor-version":[{"id":7709,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/posts\/1881\/revisions\/7709"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/media\/1336"}],"wp:attachment":[{"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1881"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}