{"id":1641,"date":"2009-08-30T10:46:41","date_gmt":"2009-08-30T02:46:41","guid":{"rendered":"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/?p=1641"},"modified":"2021-10-06T16:47:19","modified_gmt":"2021-10-06T08:47:19","slug":"%e8%87%a8%e7%95%8c%e9%9b%bb%e6%b5%81%ef%bc%88critical-current%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%e9%80%a3","status":"publish","type":"post","link":"http:\/\/localhost\/%e8%87%a8%e7%95%8c%e9%9b%bb%e6%b5%81%ef%bc%88critical-current%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%e9%80%a3\/","title":{"rendered":"\u81e8\u754c\u96fb\u6d41\uff08Critical Current\uff09"},"content":{"rendered":"<div class=\"pf-content\"><p><span style=\"color: #ff6600;\"><strong>\u81e8\u754c\u96fb\u6d41\uff08Critical Current\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\u5982\u540c\u81e8\u754c\u6eab\u5ea6\u822c\uff0c\u901a\u904e\u8d85\u5c0e\u9ad4\u4e2d\u96fb\u6d41\u82e5\u5927\u904e\u81e8\u754c\u96fb\u6d41\uff0c\u5247\u8d85\u5c0e\u6027\u4fbf\u6d88\u5931\u3002\u7576\u901a\u904e\u8d85\u5c0e\u9ad4\u7684\u96fb\u6d41\u8d85\u904e\u4e00\u5b9a\u7684\u6578\u503c I<sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">\u00a0\u5f8c\uff0c\u8d85\u5c0e\u7279\u6027\u4e5f\u88ab\u7834\u58de\u4e86\u3002I<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">\u00a0\u4e5f\u662f\u96a8\u6eab\u5ea6\u4e0d\u540c\u800c\u4e0d\u540c\u7684\u3002I<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\"><span style=\"color: #000000;\">(T)\u8868\u793a\u6eab\u5ea6\u70baT\u6642\u8d85\u5c0e\u9ad4\u7684\u81e8\u754c\u96fb\u6d41<\/span>\uff08critical current\uff09\u3002\u9019\u500b\u73fe\u8c61\u53ef\u4ee5\u5f9e\u78c1\u5834\u7834\u58de\u8d85\u5c0e\u96fb\u6027\u4f86\u8aaa\u660e\u3002\u5728\u534a\u5f91\u70baR\u7684\u8d85\u5c0e\u7dda\u4e2d\u901a\u904e\u96fb\u6d41I\u6642\uff0c\u5728\u8d85\u5c0e\u7dda\u8868\u9762\u4e0a\u7522\u751f\u7684\u78c1\u5834H<\/span><sub><span style=\"color: #000000;\">s<\/span><\/sub><span style=\"color: #000000;\">\u7b49\u65bcH<\/span><sub><span style=\"color: #000000;\">s<\/span><\/sub><span style=\"color: #000000;\">=I\/(2\u03c0R)<br \/>\n\u5982\u679c I \u5f88\u5927\uff0c\u4f7fH<\/span><sub><span style=\"color: #000000;\">s<\/span><\/sub><span style=\"color: #000000;\"> = H<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">(T)\uff0c\u90a3\u9ebc\u8d85\u5c0e\u7dda\u7684\u8d85\u5c0e\u6027\u4fbf\u88ab\u7834\u58de<br \/>\n\u7531\u65bcH<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">\uff5eH<\/span><sub><span style=\"color: #000000;\">0<\/span><\/sub><span style=\"color: #000000;\">[1-T\/T<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">]<\/span><sup><span style=\"color: #000000;\">2<\/span><\/sup><span style=\"color: #000000;\">]\n\u6240\u4ee5 I<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">(T)\uff5eI<sub>c<\/sub><\/span><span style=\"color: #000000;\">[1-(T\/T<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">)<\/span><sup><span style=\"color: #000000;\">2<\/span><\/sup><span style=\"color: #000000;\">]\uff0c\u5176\u4e2d I<\/span><sub><span style=\"color: #000000;\">c<\/span><\/sub><span style=\"color: #000000;\">(0) \u8868\u793aT = 0 K\u6642\u7684\u81e8\u754c\u96fb\u6d41\u3002<br \/>\n\u3000\u3000\u81e8\u754c\u96fb\u6d41\u8981\u600e\u9ebc\u91cf\u6e2c\u5462\uff1f \u96fb\u963b\u958b\u59cb\u4e0d\u7b49\u65bc\u96f6\u7684\u96fb\u6d41 I \u5c31\u662f\u81e8\u754c\u96fb\u6d41\u7684\u503c\uff0c\u4e5f\u5c31\u662f\u6cbf\u8457\u96fb\u6d41\u65b9\u5411\u8d85\u5c0e\u9ad4\u5169\u7aef\u7684\u96fb\u4f4d\u5deeV\u958b\u59cb\u4e0d\u70ba\u96f6\u6642\u7684\u96fb\u6d41\u3002\u7531\u65bc\u8d85\u5c0e\u9ad4\u76f8\u8b8a\u7684\u5bec\u5ea6\u662f\u76f8\u7576\u5730\u7a84\uff0c\u53ea\u8981\u7a0d\u5fae\u589e\u52a0\u4e00\u9ede\u96fb\u6d41\u5c31\u6703\u8b8a\u6210\u6b63\u5e38\u614b\uff0c\u4e14\u7531\u65bc\u6e2c\u91cf\u5100\u5668\u7684\u9748\u654f\u5ea6\u9650\u5236\uff0c\u7121\u6cd5\u91cf\u5230\u5f88\u5c0f\u7684\u8a0a\u865f\uff0c\u56e0\u6b64\u6211\u5011\u5fc5\u9808\u898f\u7bc4\u5408\u7406\u96fb\u8868\u53ef\u89e3\u6790\u7684\u7bc4\u570d\uff0c\u4f86\u898f\u5b9a\u7576\u6642\u7684\u81e8\u754c\u96fb\u6d41\u3002\u81e8\u754c\u96fb\u6d41\u7684\u6e2c\u91cf\u53ef\u5229\u7528\u4e8c\u5206\u6cd5\u4f86\u91cf\uff0c\u91cf\u6e2c\u7684\u6982\u5ff5\u662f\u5224\u65b7\u5728\u6709\u50b3\u8f38\u96fb\u6d41\u7684\u60c5\u6cc1\u4e0b\u91cf\u5230\u7684\u96fb\u58d3\u503c\u662f\u5426\u4ecb\u65bc\u6211\u5011\u5b9a\u7fa9\u7684\u96fb\u58d3\u7bc4\u570d\u5167\uff0c\u6162\u6162\u5c07\u96fb\u6d41\u903c\u8fd1\u5230\u6240\u9700\u6c42\u7684\u96fb\u6d41\u503c\uff0c\u5373\u662f\u6240\u5f97\u7684\u81e8\u754c\u96fb\u6d41\u503c\u3002<br \/>\n\u3000\u3000\u5c31\u7b2c\u4e8c\u985e\u8d85\u5c0e\u800c\u8a00\uff0c\u81e8\u754c\u96fb\u6d41\u7684\u542b\u610f\u662f\u525b\u7522\u751f\u78c1\u901a\u6d41\u52d5\u9020\u6210\u96fb\u963b\u6642\u7684\u50b3\u8f38\u96fb\u6d41\u7684\u5927\u5c0f\u3002\u7576\u50b3\u8f38\u96fb\u6d41\u5c0f\u65bcI<\/span><sub><span style=\"color: #000000;\">C<\/span><\/sub><span style=\"color: #000000;\">\u6642\uff0c\u78c1\u901a\u53d7\u91d8\u624e\u529b\u4f5c\u7528\u5927\u65bc\u7f85\u4f96\u8332\u529b\u7684\u4f5c\u7528\uff0c\u50c5\u5b58\u78c1\u901a\u7dda\u5728\u91d8\u624e\u4e2d\u5fc3\u9593\u7684\u78c1\u901a\u8815\u52d5\uff0c\u56e0\u6b64\u4e0d\u6703\u6709\u5f88\u5927\u7684\u80fd\u91cf\u640d\u8017\uff1b\u4f46\u4e00\u4f46\u50b3\u8f38\u96fb\u6d41\u8d85\u904eI<\/span><sub><span style=\"color: #000000;\">C<\/span><\/sub><span style=\"color: #000000;\">\u5f8c\uff0c\u78c1\u901a\u7dda\u6240\u53d7\u7684\u7f85\u4f96\u8332\u529b\u4fbf\u5927\u65bc\u91d8\u624e\u529b\u7684\u4f5c\u7528\uff0c\u56e0\u6b64\u78c1\u901a\u7dda\u4fbf\u53d7\u5230\u9a45\u52d5\u529b\u800c\u7522\u751f\u78c1\u901a\u6d41\u52d5\uff0c\u800c\u4f7f\u6a23\u54c1\u5177\u6709\u4e00\u5b9a\u7684\u6d41\u963b\u3002\u6240\u4ee5\uff0c\u81e8\u754c\u96fb\u6d41\u662f\u6211\u5011\u5224\u65b7\u6a23\u54c1\u5728\u627f\u53d7\u5230\u78c1\u5834\u4f5c\u7528\u4e0b\uff0c\u4e0d\u7522\u751f\u80fd\u91cf\u8017\u640d\u7684\u6307\u6a19\u3002\u6240\u4ee5\u6211\u5011\u91cf\u6e2c\u5728\u78c1\u5834\u4f5c\u7528\u4e0b\u81e8\u754c\u96fb\u6d41\u7684\u5927\u5c0f\u7121\u975e\u662f\u770b\u6211\u5011\u7684\u6a23\u54c1\u627f\u53d7\u78c1\u5834\u7834\u58de\u8d85\u5c0e\u6027\u7684\u6975\u9650\uff0c\u4ee5\u81f4\u65bc\u6211\u5011\u53ef\u4ee5\u51fa\u627e\u4e00\u7a2e\u81e8\u754c\u96fb\u6d41\u53c8\u5927\uff0c\u53c8\u80fd\u5920\u627f\u53d7\u5f88\u5927\u7684\u78c1\u5834\uff0c\u90a3\u9ebc\u9019\u7a2e\u8d85\u5c0e\u5c31\u662f\u61c9\u7528\u6975\u9ad8\u7684\u8d85\u5c0e\uff0c\u76ee\u524d\u4e5f\u6709\u8a31\u591a\u7814\u7a76\u5728\u63a2\u8a0e\u5982\u4f55\u589e\u52a0\u8d85\u5c0e\u7684\u81e8\u754c\u96fb\u6d41\u3002<br \/>\n\u3000\u3000\u5229\u7528\u8d85\u5c0e\u9ad4\u96f6\u96fb\u963b\u7684\u7279\u6027\uff0c\u53ef\u7528\u65bc\u88fd\u4f5c\u8d85\u5c0e\u5c0e\u7dda\u3002\u5229\u7528\u6b64\u7a2e\u5c0e\u7dda\u4f5c\u70ba\u96fb\u529b\u50b3\u8f38\u7dda\u3001\u80fd\u6e90\u5132\u5b58\u88dd\u7f6e\u548c\u8d85\u5c0e\u96fb\u78c1\u9435\uff0c\u4f46\u4f7f\u7528\u8d85\u5c0e\u7dda\u5708\u6240\u9700\u96fb\u6d41\u5bc6\u5ea6\u53ca\u78c1\u5834\u5747\u9700\u5f88\u5f37\uff0c\u56e0\u6b64\u8981\u9054\u5230\u53ef\u61c9\u7528\u6027\u5c31\u5fc5\u9808\u5c0b\u6c42\u53ef\u627f\u53d7\u9ad8\u96fb\u6d41\u53ca\u9ad8\u78c1\u5834\u7684\u8d85\u5c0e\u6750\u6599\u3002<\/span><\/p>\n<p><strong>\u53c3\u8003\u8cc7\u6599:<\/strong><a href=\"http:\/\/en.wikipedia.org\/wiki\/Superconductivity\">http:\/\/en.wikipedia.org\/wiki\/Superconductivity<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u81e8\u754c\u96fb\u6d41\uff08Critical Current\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\u5e2b\u7bc4\u5927\u5b78\u6d2a\u9023\u8f1d&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":[1774,1772,804],"class_list":["post-1641","post","type-post","status-publish","format-standard","hentry","category-physics00","category-physics08","category-physics08-01","tag-1774","tag-1772","tag-804","loop-entry","cat-107","cat-37","cat-38","no-thumbnail"],"views":8366,"_links":{"self":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1641","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=1641"}],"version-history":[{"count":1,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1641\/revisions"}],"predecessor-version":[{"id":90450,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/1641\/revisions\/90450"}],"wp:attachment":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/media?parent=1641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/categories?post=1641"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/tags?post=1641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}