{"id":34960,"date":"2016-08-20T08:00:06","date_gmt":"2016-08-20T00:00:06","guid":{"rendered":"\/\/m.iemloyee.com\/?p=34960"},"modified":"2016-08-19T22:49:25","modified_gmt":"2016-08-19T14:49:25","slug":"nature%ef%bc%9a%e8%bf%87%e6%8e%ba%e6%9d%82%e8%b6%85%e5%af%bc%e4%bd%93-%e4%b8%b4%e7%95%8c%e6%b8%a9%e5%ba%a6%e4%b8%8e%e8%bf%87%e6%8e%ba%e6%9d%82%e6%b0%a7%e5%8c%96%e9%93%9c%e9%97%b4%e7%9a%84","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=34960","title":{"rendered":"Nature\uff1a\u8fc7\u63ba\u6742\u8d85\u5bfc\u4f53\u2014\u4e34\u754c\u6e29\u5ea6\u4e0e\u8fc7\u63ba\u6742\u6c27\u5316\u94dc\u95f4\u7684\u5173\u7cfb"},"content":{"rendered":"

\u3010\u5f15\u8a00<\/strong>\u3011<\/p>\n

\u5173\u4e8e\u4f4e\u63ba\u6742\u7684\u6c27\u5316\u94dc\u8d85\u5bfc\u4f53\u7684\u7269\u7406\u6027\u8d28\uff0c\u5982\u8d5d\u80fd\u9699\u3001\u81ea\u65cb\u3001\u7535\u8377\u6709\u5e8f\u6001\u7b49\u4e0e\u6750\u6599\u8d85\u5bfc\u6027\u4e4b\u95f4\u7684\u5f71\u54cd\u7684\u4e89\u8bba\u4e00\u76f4\u8f83\u4e3a\u6fc0\u70c8\u3002\u800c\u8fc7\u63ba\u6742\uff08\u63ba\u6742\u91cf\u4e0d\u65ad\u589e\u52a0\u81f3\u8d85\u8fc7\u6700\u4f18\u63ba\u6742\u91cf\uff09\u7684\u6c27\u5316\u94dc\u5219\u88ab\u8ba4\u4e3a\u662f\u66f4\u4e3a\u7b80\u5355\uff0c\u4e0e\u8d39\u7c73\u5b50\u7269\u7406\u6027\u8d28\u5f3a\u76f8\u5173\u7684\u8d85\u5bfc\u6750\u6599\uff0c\u540c\u65f6\u4e5f\u6ee1\u8db3\u4f20\u7edf\u7684Bardeen\u2013Cooper\u2013Schrieffer\uff08BCS\uff09\u7406\u8bba\u3002\u65e9\u5148\u51e0\u4e2a\u5173\u4e8e\u8fc7\u63ba\u6742\u6837\u54c1\u7684\u7814\u7a76\u663e\u793a\u6750\u6599\u7684\u8d85\u6d41\u5bc6\u5ea6\u8f83\u9884\u671f\u66f4\u4f4e\uff0c\u8fd9\u4e3b\u8981\u5f52\u56e0\u4e8e\u914d\u5bf9\u5931\u6548\uff0c\u65e0\u5e8f\u53ca\u76f8\u5206\u79bb\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u671f\uff0c\u6765\u81ea\u5e03\u9c81\u514b\u6d77\u6587\u56fd\u5bb6\u5b9e\u9a8c\u5ba4\u7684Bo\u017eovi\u0107\uff08\u901a\u8baf\u4f5c\u8005\uff09\u53ca\u5176\u4ed6\u7814\u7a76\u8005\u901a\u8fc7\u7814\u7a76La2\u2212xSrxCuO4\u76f8\u56fe\u7684\u8fc7\u63ba\u6742\u90e8\u5206\uff0c\u9996\u6b21\u8fdb\u884c\u4e86\u5173\u4e8e\u8fc7\u63ba\u6742\u4f53\u7cfb\u4e2d\u8d85\u6d41\u5bc6\u5ea6\u7684\u53ef\u9760\u6027\u6d4b\u91cf\uff0c\u63d0\u51fa\u6750\u6599\u7684\u78c1\u7a7f\u900f\u6df1\u5ea6\u548c\u76f8\u786c\u5ea6\u4e3b\u8981\u53d6\u51b3\u4e8e\u6e29\u5ea6\u548c\u63ba\u6742\u91cf\u3002\u5728\u6210\u5343\u4e0a\u4e07\u4e2a\u6837\u54c1\u4e2d\uff0c\u7814\u7a76\u8005\u5bf9\u63ba\u6742\u91cf\u7cbe\u786e\u5230\u767e\u5206\u4e4b\u4e00\u7684\u6837\u54c1\u8fdb\u884c\u78c1\u7a7f\u900f\u6df1\u5ea6\u548c\u76f8\u786c\u5ea6\u7edd\u5bf9\u503c\u7684\u6d4b\u5b9a\uff0c\u5f97\u5230\u7684\u5927\u6570\u636e\u5448\u73b0\u4e00\u4e2a\u660e\u663e\u7684\u8d8b\u52bf\uff0c\u5e76\u663e\u793a\u51fa\u6750\u6599\u7684\u56fa\u6709\u6027\u8d28\u3002\u5b9e\u9a8c\u6240\u7528\u5230\u7684\u8584\u819c\u662f\u5747\u8d28\u7684\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u4e34\u754c\u8d85\u5bfc\u6e29\u5ea6\u4e0d\u540c\uff0c\u76f8\u4e92\u95f4\u6e29\u5ea6\u5dee\u5f88\u5c0f\uff08\u5c0f\u4e8e1K\uff09\u3002\u4efb\u610f\u63ba\u6742\u91cf\u6750\u6599\u7684\u76f8\u786c\u5ea6\u968f\u7740\u6e29\u5ea6\u5448\u76f4\u7ebf\u4e0b\u964d\u3002\u96f6\u6e29\u6750\u6599\u7684\u76f8\u786c\u5ea6\u4e0e\u4e34\u754c\u8d85\u5bfc\u6e29\u5ea6\u95f4\u7684\u5173\u7cfb\u8fd1\u76f4\u7ebf\u578b\uff0c\u4e0d\u8fc7\u7a0d\u6709\u504f\u79fb\uff1b\u800c\u5728\u539f\u70b9\u5904\u8fd1\u4f3c\u629b\u7269\u7ebf\u578b\u3002\u8fd9\u4e9b\u89c4\u5f8b\u5374\u53c8\u4e0eBCS\u7406\u8bba\u4e0d\u76f8\u7b26\uff0c\u4eff\u4f5b\u5927\u90e8\u5206\u7684\u8d85\u5bfc\u7535\u5b50\u6d88\u5931\u4e86\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe\u4e00\u3001\u5408\u6210\u4e0e\u8868\u5f81\u6280\u672f<\/p>\n

<\/strong>
\n\uff08a\uff09\u5f53\u8584\u819c\u5448\u73b0\u8d85\u5bfc\u6027\u65f6\uff0cVp\u76f8\u5185\u7684\u5b9e\u9645\u7ec4\u5206\uff0c\u7535\u538b\u8d2f\u7a7f\u5165\u62fe\u6ce2\u7ebf\u5708\uff08\u4e0e\u4e92\u611f\u7cfb\u6570\u6210\u6bd4\u4f8b\uff09\u65f6\u8868\u73b0\u51fa\u6297\u78c1\u6027\u7b5b\u9009\uff08\u8fc8\u65af\u7eb3\u6548\u5e94\uff09\u3002\u5185\u5d4c\u56fe\u4e3a\u5b9e\u9a8c\u7684\u7b80\u7565\u56fe\u793a\u3002<\/p>\n

\uff08b\uff09Vp\u7684\u865a\u90e8\u8868\u793a\uff0c\u572810\u00d710 mm2\u7684\u8584\u819c\u4e2d\uff0c\u6750\u6599\u7684Tc\u662f\u5747\u5300\u7684\uff0c\u90fd\u9ad8\u4e8e0.1K\u3002<\/p>\n

\uff08c\uff09\u7a7f\u900f\u6df1\u5ea6\u03bb\u53ca\u590d\u6742\u7684a.c.\uff08v=40kHz\uff09\u5bfc\u7535\u6027Re\u03c3\u4e3b\u8981\u6e90\u4e8e\u590d\u963b\u6297\u3002<\/p>\n

\uff08d\uff09\u6574\u4e2a\u7814\u7a76\u4e2d\u6837\u54c1\u662f\u57fa\u4e8e\u539f\u5b50\u5c42\u6c34\u5e73\u8fdb\u884c\u8bbe\u8ba1\uff0cLSAO\u8868\u793aLaSrAlO4\u7ed3\u6784\u3002<\/p>\n

\u56fe\u4e8c\u3001\u8d85\u6d41\u4f53\u4e0e\u6e29\u5ea6\u548c\u63ba\u6742\u91cf\u76f8\u4e92\u95f4\u7684\u5173\u7cfb\u56fe<\/p>\n

<\/strong>
\n\uff08a\uff09\u901a\u8fc7ALL-MBE\u5408\u6210100\u4e2a\u6700\u4e3a\u5747\u8d28\u7684LSCO\u8584\u819c\uff0c\u5e76\u6d4b\u91cf\u5b83\u4eec\u7684\u7a7f\u900f\u6df1\u5ea6\u03bb\uff0c\u5f97\u5230\u03bb-T\u56fe\u50cf\u3002\u901a\u8fc7\u7ea2\u7eff\u865a\u7ebf\u8fde\u540c\u5177\u989c\u8272\u7684\u9634\u5f71\u90e8\u5206\u8fdb\u884c\u76f4\u89c2\u63cf\u8ff0\u3002<\/p>\n

\uff08b\uff09\u56fe\u793a\u4e3a\u76f8\u786c\u5ea6\u03c1s-T\u56fe\u50cf\u3002<\/p>\n

\uff08c\uff09\u8fc7\u63ba\u6742\u91cf\u6700\u9ad8\u7684\u6837\u54c1\u7684\u03c1s(T)\u56fe\u50cf\uff0c\u6d4b\u91cf\u6e29\u5ea6\u4f4e\u4e8e0.3K\u3002<\/p>\n

\uff08d\uff09Tc\u4e0e\u03c1s0 \u2261 \u03c1s(T \u2192 0)\u7684\u5173\u7cfb\u56fe\u3002\u901a\u8fc7\u84dd\u8272\u5c0f\u65b9\u5757\u6765\u8868\u793a\u5b9e\u9a8c\u6570\u636e\uff1b\u7eff\u8272\u865a\u7ebf\u6ee1\u8db3Tc = T0 + \u03b1\u03c1s0\uff08\u03b1 = 0.37 \u00b1 0.02\uff0c\u03c1s0 > 15 K\uff09\uff0c\u7ea2\u8272\u865a\u7ebf\u6ee1\u8db3Tc = \u03b3 \u03c1s0 \uff08\u03b3 = (4.2 \u00b1 0.5) K1\/2\uff0c\u03c1s0 < 12 K\uff09\u3002<\/p>\n

\u56fe\u4e09\u3001\u901a\u8fc7ALL-MBE\u5408\u6210\u7684\u8fc7\u63ba\u6742\u7684LSCO\u8584\u819c\u4e3a\u7eaf\u8d85\u5bfc\u4f53<\/p>\n

<\/strong>
\n\uff08a\uff09\u4e0d\u540c\u63ba\u6742\u6c34\u5e73\u4e0bLSCO\u8584\u819c\u7684\u7535\u963b\u7387\uff0c\u81ea\u4e0a\u800c\u4e0b\u5206\u522b\u4e3a\uff1ap = 0.172\uff0c0.205\uff0c0.211\uff0c0.217\uff0c0.220\uff0c0.224\uff0c0.228\uff0c0.230\uff0c0.233\uff0c0.237\uff0c0.242\uff0c0.245\uff0c0.248\uff0c0.251\uff0c0.254\uff0c0.258\uff0c0.295\u3002<\/p>\n

\uff08b\uff09\u03c1s-T\u56fe\u50cf\u3002\u7ea2\u7ebf\u8868\u793a\u6700\u4f18\u63ba\u6742\u4e0b\u7684LSCO\u8584\u819c\uff08p =0.16\uff09\uff0c\u5177Zn\u63ba\u6742\uff0c\u7528Zn\u66ff\u4ee30.5%\u7684Cu\u3002\u84dd\u7ebf\u8868\u793a\u8f7b\u5fae\u8fc7\u63ba\u6742\u7684\u7eafLSCO\u8584\u819c\uff08p = 0.19\uff09\u6709\u76f8\u5339\u914d\u7684Tc\uff08\u5927\u7ea6\u4e3a38K\uff09\u3002\u7eaf\u8584\u819c\u7684\u03c1s(T)\u56fe\u50cf\u8fd1\u4f3c\u4e3a\u7ebf\u578b\uff0c\u800c\u5e26\u6709Zn\u63ba\u6742\u7684\u8584\u819c\u914d\u5bf9\u5931\u6548\u4ece\u800c\u4f7f\u03c1s(T)\u56fe\u50cf\u5448\u629b\u7269\u7ebf\u578b\uff0c\u4e14Tc\u964d\u4f4e\u81f325K\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Dependence of the critical temperature in overdoped copper oxides on superfluid density<\/a>\uff08Nature\uff0c2016\uff0cDOI\uff1a10.1038\/nature19061\uff09<\/p>\n

Nature\u540c\u671f\u65b0\u95fb\u8bc4\u8bba\uff1a<\/strong>Condensed-matter physics: Superconducting electrons go missing<\/a>\uff08Nature\uff0c2016\uff0cDOI\uff1a10.1038\/536282a\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4\u5927\u9ed1\u5929\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8bd1\u3002<\/p>\n

\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n

\"\u6750\u6599\u4eba\"<\/p>\n","protected":false},"excerpt":{"rendered":"

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