{"id":1643,"date":"2009-08-30T10:47:24","date_gmt":"2009-08-30T02:47:24","guid":{"rendered":"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/?p=1643"},"modified":"2021-10-06T16:47:19","modified_gmt":"2021-10-06T08:47:19","slug":"%e8%87%a8%e7%95%8c%e7%a3%81%e5%a0%b4%ef%bc%88critical-magnetic-field%ef%bc%89-%e5%9c%8b%e7%ab%8b%e5%bd%b0%e5%8c%96%e5%b8%ab%e7%af%84%e5%a4%a7%e5%ad%b8%e7%89%a9%e7%90%86%e5%ad%b8%e7%b3%bb%e6%b4%aa","status":"publish","type":"post","link":"http:\/\/localhost\/%e8%87%a8%e7%95%8c%e7%a3%81%e5%a0%b4%ef%bc%88critical-magnetic-field%ef%bc%89-%e5%9c%8b%e7%ab%8b%e5%bd%b0%e5%8c%96%e5%b8%ab%e7%af%84%e5%a4%a7%e5%ad%b8%e7%89%a9%e7%90%86%e5%ad%b8%e7%b3%bb%e6%b4%aa\/","title":{"rendered":"\u81e8\u754c\u78c1\u5834\uff08Critical Magnetic Field\uff09"},"content":{"rendered":"<div class=\"pf-content\"><p><span style=\"color: #ff6600;\"><strong>\u81e8\u754c\u78c1\u5834\uff08Critical Magnetic Field\uff09<\/strong><\/span><br \/>\n<span style=\"color: #008000;\">\u570b\u7acb\u864e\u5c3e\u79d1\u6280\u5927\u5b78\u96fb\u5b50\u5de5\u7a0b\u7cfb\u5433\u6dfb\u5168\u52a9\u7406\u6559\u6388\/\u570b\u7acb\u5f70\u5316\u5e2b\u7bc4\u5927\u5b78\u6d2a\u9023\u8f1d\u6559\u6388\u8cac\u4efb\u7de8\u8f2f<\/span><\/p>\n<p>\u3000\u3000\u5916\u52a0\u78c1\u5834\u52a0\u5230\u8d85\u5c0e\u9ad4\u4e0a\u4e4b\u5f8c\uff0c\u7576\u78c1\u5834\u5927\u904e\u81e8\u754c\u78c1\u5834\u6642\uff0c\u8d85\u5c0e\u6027\u6d88\u5931\uff0c\u8d85\u5c0e\u9ad4\u5c31\u6062\u5fa9\u4e86\u96fb\u963b\uff0c\u56de\u5230\u6b63\u5e38\u614b\uff0c\u6211\u5011\u628a H<sub>c<\/sub> \u53eb\u81e8\u754c\u78c1\u5834\uff08critical magnetic field\uff09\u3002\u6839\u64da\u8d85\u5c0e\u9ad4\u5728\u78c1\u5834\u4e0b\u7684\u884c\u70ba\u8868\u73fe\uff0c\u53ef\u5206\u70ba\u7b2c\u4e00\u985e\u53ca\u7b2c\u4e8c\u985e\u8d85\u5c0e\u9ad4\u3002<br \/>\n\u5c0d\u7b2c\u4e00\u985e\u8d85\u5c0e\uff08Type-I superconductor\uff09\u800c\u8a00\uff0c\u7576\u5916\u78c1\u5834\u8d85\u904e\u67d0\u4e00\u6578\u503c H<sub>c<\/sub>\u00a0 \u7684\u6642\u5019\u8d85\u5c0e\u7279\u6027\u6703\u88ab\u7834\u58de\u3002<br \/>\n\u5c0d\u7b2c\u4e8c\u985e\u8d85\u5c0e\uff08Type-II superconductor\uff09\u800c\u8a00\uff0c\u7576\u5916\u78c1\u5834\u8d85\u904e\u67d0\u4e00\u6578\u503c\u4e0b\u81e8\u754c\u78c1\u5834 H<sub>c1<\/sub>\u00a0\u7684\u6642\u5019\uff0c\u51fa\u73fe\u8d85\u5c0e\u76f8\u8207\u6b63\u5e38\u76f8\u5171\u5b58\u7684\u6df7\u5408\u614b\uff0c\u78c1\u529b\u7dda\u6703\u4ee5\u91cf\u5b50\u5316\u7684\u5f62\u5f0f{\u78c1\u901a\u5b50(fluxon)}\u9032\u5165\u8d85\u5c0e\u9ad4\uff0c\u96a8\u8457\u78c1\u5834\u7684\u589e\u5f37\uff0c\u9019\u4e9b\u5c6c\u65bc\u975e\u8d85\u5c0e\u614b\u7684\u78c1\u901a\u91cf\u5b50\u6578\u76ee\u8ddf\u8457\u589e\u52a0\uff0c\u8d85\u5c0e\u7279\u6027\u6703\u88ab\u6f38\u6f38\u7834\u58de\uff0c\u5230\u4e0a\u81e8\u754c\u78c1\u5834 H<sub>c2<\/sub>\u00a0\u6642\uff0c\u6062\u5fa9\u5230\u6b63\u5e38\u614b\u3002<br \/>\n\u81e8\u754c\u78c1\u5834\u662f\u6bcf\u4e00\u500b\u8d85\u5c0e\u9ad4\u7684\u91cd\u8981\u7279\u6027\uff0c\u5be6\u9a57\u767c\u73fe\uff0c\u5c0d\u67d0\u7279\u5b9a\u7684\u8d85\u5c0e\u7269\u8cea\u800c\u8a00\uff0cH<sub>c<\/sub>\u00a0\u662f\u96a8\u6eab\u5ea6\u800c\u8b8a\u5316\u7684\uff0cH<sub>c<\/sub>\u00a0\u548c T \u7684\u95dc\u4fc2\u53ef\u9075\u5faa\u62cb\u7269\u7dda\u8fd1\u4f3c\u95dc\u4fc2\u3002<br \/>\n\u3000\u3000\u3000H<sub>c<\/sub>\uff5eH<sub>c<\/sub>(0)[1-(T\/T<sub>c<\/sub>)<sup>2<\/sup>]\n\u3000\u3000\u5176\u4e2d H<sub>c<\/sub>(0) \u8868\u793a\u7d55\u5c0d\u96f6\u5ea6\u6642\u8d85\u5c0e\u9ad4\u7684\u81e8\u754c\u78c1\u5834\u3002\u6ce8\u610fT = Tc\u6642\uff0c\u81e8\u754c\u78c1\u5834\u70ba\u96f6\uff0c\u63db\u53e5\u8a71\u8aaa\uff0c\u524d\u9762\u6240\u8aaa\u7684\u8d85\u5c0e\u81e8\u754c\u6eab\u5ea6Tc\u662f\u6307\u5728\u7121\u78c1\u5834\u4e0b\u8d85\u5c0e\u9ad4\u5f9e\u6b63\u5e38\u614b\u904e\u6e21\u5230\u8d85\u5c0e\u614b\u7684\u6eab\u5ea6\u3002<br \/>\n<a href=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2011\/01\/1643-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19688\" title=\"1643-1\" src=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2011\/01\/1643-1.jpg\" alt=\"\" width=\"434\" height=\"300\" \/><\/a><\/p>\n<p>\u8d85\u5c0e\u6750\u6599\u672c\u8eab\u5177\u6709\u7279\u5fb5\u5c3a\u5ea6\uff0c\u4e5f\u5c31\u662f\u76f8\u5e72\u9577\u5ea6(coherence length) \u53ca\u7a7f\u900f\u9577\u5ea6\uff08penetration depth\uff09\uff0c\u82e5\u662f\u8a66\u5716\u5f9e\u6539\u8b8a\u7279\u5fb5\u5c3a\u5ea6\u8b93\u9032\u5165\u8d85\u5c0e\u7684\u78c1\u901a\u91cf\u5b50\u8b8a\u7d30\uff0c\u5c31\u53ef\u4ee5\u5728\u5b83\u5011\u4f54\u6eff\u6750\u6599\u524d\u5c07\u78c1\u5834\u63d0\u9ad8\u5230\u8f03\u5927\u7684\u503c\uff0c\u4ea6\u5373\u63d0\u9ad8\u8d85\u5c0e\u9ad4\u7684\u81e8\u754c\u78c1\u5834\u3002\u82f1\u570b\u79d1\u5b78\u5bb6\u5c07\u8d85\u5c0e\u6750\u6599PbMo<sub>6<\/sub>S<sub>8<\/sub>\u7814\u78e8\u5927\u5c0f\u7d0420\u5948\u7c73\u7684\u9846\u7c92\uff0c\u518d\u91cd\u65b0\u88fd\u6210\u584a\u6750\uff0c\u88fd\u9020\u51fa\u5177\u6709\u8a31\u591a\u6676\u7c92\u908a\u754c(grain bouncaries)\u3001\u932f\u4f4d(dislocations)\u53ca\u7a7a\u4f4d(vacancies)\u7684\u8d85\u5c0e\u9ad4\uff0c\u85c9\u4ee5\u63d0\u9ad8\u96fb\u5b50\u6563\u5c04\u6a5f\u7387\u3002\u7d50\u679c\u5237\u65b0\u8d85\u5c0e\u9ad4\u6240\u80fd\u627f\u53d7\u6700\u5927\u78c1\u5834\u7684\u8a18\u9304\uff0c\u9019\u7a2e\u5177\u5948\u7c73\u5fae\u6676\u7d50\u69cb\u7684 PbMo<sub>6<\/sub>S<sub>8<\/sub>\u00a0\u81e8\u754c\u78c1\u5834\u53ef\u9054100 Tesla\u3002\u9019\u9805\u6280\u8853\u53ef\u671b\u7528\u4f86\u88fd\u9020\u66f4\u5f37\u7684\u78c1\u9435\u3002<br \/>\n\u3000\u3000\u53e6\u4e00\u65b9\u9762\u5728\u8d85\u5c0e\u5167\u90e8\u88fd\u9020\u6709\u5e8f\u7684\u4eba\u5de5\u7f3a\u9677\uff0c\u91d8\u624e\u4e2d\u5fc3\u9846\u7c92\u7684\u7a2e\u985e\u3001\u5c3a\u5ea6\u3001\u9593\u9694\u53ca\u5f62\u72c0\u7684\u95dc\u9023\u6027\uff0c\u4ee5\u63a2\u8a0e\u78c1\u901a\u6e26\u65cb\u7dda\u8207\u78c1\u901a\u6e26\u65cb\u7dda\u7684\u4ea4\u4e92\u4f5c\u7528\u53ca\u78c1\u901a\u6e26\u65cb\u7dda\u8207\u91d8\u624e\u4e2d\u5fc3\u9593\u7684\u4ea4\u4e92\u4f5c\u7528\uff0c\u4e86\u89e3\u5728\u8d85\u5c0e\u9ad4\u4e2d\u6240\u7522\u751f\u8a31\u591a\u591a\u6a23\u5316\u975c\u614b\u548c\u52d5\u614b\u7684\u6709\u8da3\u7684\u7269\u7406\u73fe\u8c61\u3002<\/p>\n<p><strong>\u53c3\u8003\u8cc7\u6599\uff1a<\/strong><a href=\"http:\/\/en.wikipedia.org\/wiki\/Superconductivity\" target=\"_blank\">http:\/\/en.wikipedia.org\/wiki\/Superconductivity<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u81e8\u754c\u78c1\u5834\uff08Critical Magnetic Field\uff09 \u570b\u7acb\u864e\u5c3e\u79d1\u6280\u5927\u5b78\u96fb\u5b50\u5de5\u7a0b\u7cfb\u5433\u6dfb\u5168\u52a9\u7406\u6559\u6388\/\u570b\u7acb\u5f70\u5316&hellip;<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107,37,38],"tags":[1775,1772,804],"class_list":["post-1643","post","type-post","status-publish","format-standard","hentry","category-physics00","category-physics08","category-physics08-01","tag-1775","tag-1772","tag-804","loop-entry","cat-107","cat-37","cat-38","no-thumbnail"],"views":6001,"_links":{"self":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/comments?post=1643"}],"version-history":[{"count":1,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1643\/revisions"}],"predecessor-version":[{"id":90449,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1643\/revisions\/90449"}],"wp:attachment":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/media?parent=1643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/categories?post=1643"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/tags?post=1643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}