{"id":1894,"date":"2015-07-05T20:14:43","date_gmt":"2015-07-06T03:14:43","guid":{"rendered":"http:\/\/physikon.net\/?p=1894"},"modified":"2022-06-22T09:51:53","modified_gmt":"2022-06-22T16:51:53","slug":"1894","status":"publish","type":"post","link":"http:\/\/physikon.net\/?p=1894","title":{"rendered":"Coexisting Holes and Electrons in High-T<sub>c<\/sub> Materials: implications from normal state transport"},"content":{"rendered":"<p><!--more--><\/p>\n<hr \/>\n<p style=\"text-align: justify;\"><strong>Coexisting Holes and Electrons in High-<em>T<\/em><sub>C<\/sub>\u00a0Materials: implications from normal state transport<\/strong>, D. R. Harshman J. D. Dow and A. T. Fiory\u00a0[<a href=\"https:\/\/doi.org\/10.48550\/arXiv.1202.1792\">arXiv<\/a>]\n<p style=\"text-align: justify;\">Normal state resistivity and Hall effect are shown to be successfully modeled by a two-band model of holes and electrons that is applied self-consistently to (i) DC transport data reported for eight bulk-crystal and six oriented-film specimens of YBa<sub>2<\/sub>Cu<sub>3<\/sub>O<sub>7\u2013\u03b4<\/sub>, and (ii) far-infrared Hall angle data reported for YBa<sub>2<\/sub>Cu<sub>3<\/sub>O<sub>7\u2013\u03b4<\/sub> and Bi<sub>2<\/sub>Sr<sub>2<\/sub>CaCu<sub>2<\/sub>O<sub>8+\u03b4<\/sub>. The electron band exhibits extremely strong scattering; the extrapolated DC residual resistivity of the electronic component is shown to be consistent with the previously observed excess thermal conductivity and excess electrodynamic conductivity at low temperature. Two-band hole-electron analysis of Hall angle data suggest that the electrons possess the greater effective mass.<\/p>\n<p style=\"text-align: justify;\">\n<table id=\"tablepress-11\" class=\"tablepress tablepress-id-11\">\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\/Coex_Fig3_rev.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/Coex_Fig3_rev-209x300.jpg\" alt=\"Coex_Fig3_rev\" width=\"209\" height=\"300\" class=\"alignright size-medium wp-image-1363\" srcset=\"http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/Coex_Fig3_rev-209x300.jpg 209w, http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/Coex_Fig3_rev-712x1024.jpg 712w, http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/Coex_Fig3_rev-104x150.jpg 104w, http:\/\/physikon.net\/wp-content\/uploads\/2015\/05\/Coex_Fig3_rev.jpg 1824w\" sizes=\"auto, (max-width: 209px) 100vw, 209px\" \/><\/a><br \/>\n<p align=\"justify\">Temperature dependences of composite measured resistivity &rho; (points and solid curve) and fitted electron &rho;<sub>n<\/sub> and hole &rho;<sub>p<\/sub> components (points and dashed curves). Dotted lines are guides to the eye connecting an undetermined interval between the origin and the superconducting transition. (a) Crystal specimens; (b) film specimens.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-11 from cache -->\n<p style=\"text-align: justify;\">D. R. Harshman, J. D. Dow and A. T. Fiory, <a href=\"https:\/\/doi.org\/10.1080\/14786435.2010.527864\">Philos. Mag. <strong>91<\/strong>, 818 (2011)<\/a>.<\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1363,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,9],"tags":[],"class_list":["post-1894","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\/1894","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=1894"}],"version-history":[{"count":18,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/posts\/1894\/revisions"}],"predecessor-version":[{"id":7707,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/posts\/1894\/revisions\/7707"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=\/wp\/v2\/media\/1363"}],"wp:attachment":[{"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1894"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/physikon.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}