{"id":167574,"date":"2019-02-23T06:32:02","date_gmt":"2019-02-22T22:32:02","guid":{"rendered":"\/\/m.iemloyee.com\/?p=167574"},"modified":"2019-02-22T21:01:21","modified_gmt":"2019-02-22T13:01:21","slug":"%e3%80%90%e5%b7%b2%e5%9b%9e%e5%a4%8d%e3%80%91%e5%a4%8d%e6%97%a6%e5%a4%a7%e5%ad%a6%e5%b0%81%e4%b8%9c%e6%9d%a5%e3%80%81%e5%bd%ad%e7%91%9enat-commun-%ef%bc%9afese-srtio3%e7%95%8c%e9%9d%a2%e8%b6%85","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=167574","title":{"rendered":"\u590d\u65e6\u5927\u5b66\u5c01\u4e1c\u6765\u3001\u5f6d\u745eNat. Commun.\uff1aFeSe\/SrTiO3\u754c\u9762\u8d85\u5bfc\u589e\u5f3a\u7684\u534f\u540c\u6548\u5e94"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n FeSe\u8584\u819c\u4e0eSrTiO3<\/sub>\uff08STO\uff09\u886c\u5e95\u4e4b\u95f4\u7684\u754c\u9762\u8d85\u5bfc\uff0c\u521b\u9020\u4e86\u754c\u9762\u589e\u5f3a\u8d85\u5bfc\u8f6c\u53d8\u6e29\u5ea6\uff08Tc\uff09\u7684\u8bb0\u5f55\u3002\u76f8\u6bd4\u4e8e\u5177\u6709\u51e0\u4e4e\u76f8\u540c\u7684\u8d39\u7c73\u9762\u7684\u540c\u4e00\u7c7b\u6750\u6599\uff0cFeSe\/STO\u754c\u9762\u7684\u8d85\u5bfcTc\u59cb\u7ec8\u6bd4\u540c\u4e00\u4f53\u7cfb\u7684\u4f53\u6750\u6599\u7684\u6700\u9ad8Tc\u9ad820-50\uff05\u3002\u5355\u5c42FeSe\u548c\u53ef\u6781\u5316\u886c\u5e95\u4e4b\u95f4\u754c\u9762\u5904\u7684Tc\u589e\u5f3a\u6548\u5e94\uff0c\u5f15\u8d77\u4e86\u5bf9Tc\u589e\u5f3a\u673a\u5236\u7684\u7814\u7a76\u3002\u4f46\u662f\u8fd9\u79cd\u754c\u9762\u589e\u5f3a\u673a\u5236\u76ee\u524d\u4ecd\u7136\u7f3a\u4e4f\u76f4\u63a5\u8bc1\u636e\uff0c\u5305\u62ec\u754c\u9762\u4e0a\u662f\u5426\u5b58\u5728\u754c\u9762\u7535\u5b50-\u58f0\u5b50\u76f8\u4e92\u4f5c\u7528\uff08EPI\uff09\uff0c\u53ca\u5176\u4e0eFeSe\/STO\u4e2d\u7684\u9ad8Tc\u662f\u5426\u5b58\u5728\u76f8\u5173\u6027\u3002\u66f4\u591a\u7684\u7591\u95ee\u5305\u62ec\uff1a\u80fd\u5e26\u7ed3\u6784\u4e2d\u7684\u590d\u5236\u5e26\u662f\u7b80\u5355\u7684\u91cd\u6574\u5316dxy\u5e26\uff0c\u8fd8\u662f\u6e90\u4e8e\u754c\u9762\u7535\u5b50-\u58f0\u5b50\u8026\u5408\u6548\u5e94\uff0c\u5149\u7535\u5b50\u80fd\u8c31\u4e2d\u7684\u590d\u5236\u5e26\u7684\u5f62\u6210\u662f\u4e0e\u5149\u7535\u6548\u5e94\u7684\u521d\u6001\u76f8\u5173\uff0c\u8fd8\u662f\u4e0e\u5b9e\u9a8c\u4e2d\u5c04\u51fa\u7684\u5149\u7535\u5b50\u6709\u5173\u7b49\u3002\u754c\u9762EPI\u662f\u5426\u5b58\u5728\uff0c\u4ee5\u53ca\u5176\u4e0e\u8d85\u5bfc\u7684\u76f8\u5173\u6027\u4ecd\u5b58\u5728\u5f88\u5927\u4e89\u8bae\u3002\u5206\u6790\u8be5\u673a\u5236\u9700\u8981\u6709\u6548\u5730\u64cd\u7eb5\u754c\u9762\u58f0\u5b50\uff0c\u5b9a\u91cf\u8868\u5f81\u754c\u9762EPI\u548c\u8d85\u5bfc\u6027\uff0c\u4ee5\u53ca\u6709\u6548\u63a7\u5236\u8584\u819c\u8d28\u91cf\uff0c\u8fc4\u4eca\u5c1a\u672a\u5b9e\u73b0\u3002\u672c\u6587\u7ed3\u5408\u4e86\u9ad8\u8d28\u91cf\u7684FeSe\/STO\u7684\u8584\u819c\u751f\u957f\uff0c16<\/sup>O\u219418<\/sup>O\u540c\u4f4d\u7d20\u66ff\u4ee3\u7684\u754c\u9762\u8c03\u63a7\u53ca\u5168\u9762\u6df1\u5165\u7684\u89d2\u5ea6\u5206\u8fa8\u5149\u7535\u5b50\u80fd\u8c31\u7814\u7a76\uff0c\u5bf9\u5177\u6709\u9ad8\u8d28\u91cf\u548c\u53ef\u63a7\u7535\u5b50\u63ba\u6742\u7684\u6837\u54c1\u8fdb\u884c\u4e86\u8d85\u5bfc\u80fd\u9699\u7684\u5b9a\u91cf\u5206\u6790\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u4e2d\u56fd\u590d\u65e6\u5927\u5b66<\/strong>\u7684\u5c01\u4e1c\u6765<\/strong>\u548c\u5f6d\u745e\uff08\u5171\u540c\u901a\u8baf\uff09<\/strong>\u4f5c\u8005\u7b49\u4eba\uff0c\u7ed3\u5408\u9ad8\u8d28\u91cf\u754c\u9762\u751f\u957f\uff0c16<\/sup>O\u219418<\/sup>O\u540c\u4f4d\u7d20\u66ff\u4ee3\uff0c\u4ee5\u53ca\u89d2\u5206\u8fa8\u5149\u7535\u5b50\u80fd\u8c31\u7684\u5927\u91cf\u6570\u636e\uff0c\u8868\u660e\u4e86FeSe\/SrTiO3<\/sub>\u4e2d\u7684\u9ad8Tc\u662f\u6e90\u4e8eFeSe\u4e2d\u7684\u914d\u5bf9\u673a\u5236\u4ee5\u53caFeSe\u7535\u5b50\u548cSrTiO3<\/sub>\u58f0\u5b50\u4e4b\u95f4\u8026\u5408\u7684\u534f\u540c\u4f5c\u7528\u3002\u7ed3\u679c\u8868\u660e\uff0c\u4e0d\u540cCooper\u914d\u5bf9\u901a\u9053\u4e4b\u95f4\u7684\u7c7b\u4f3c\u5408\u4f5c\u53ef\u80fd\u662f\u7406\u89e3\u548c\u8bbe\u8ba1\u9ad8\u6e29\u8d85\u5bfc\u4f53\u7684\u4e00\u822c\u6846\u67b6\u3002\u76f8\u5173\u6210\u679c\u4ee5\u201c<\/strong>Evidence of cooperative effect on the enhanced superconducting transition temperature at the FeSe\/SrTiO3<\/sub> interface<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Nature Communications<\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong> 1 <\/strong>\u58f0\u5b50\u7279\u5f81\u7684\u540c\u4f4d\u7d20\u4f9d\u8d56\u6027<\/strong><\/p>\n \uff08a\uff09\u5728SrTi16<\/sup>O3<\/sub>\uff08ST16<\/sup>O\uff09\u6216SrTi18<\/sup>O3<\/sub>\uff08ST18<\/sup>O\uff09\u819c\u768460\u4e2a\u5355\u4f4d\u6676\u80de\u4e0a\u751f\u957f\u7684\u5355\u5c42FeSe\u819c\u7684\u793a\u610f\u56fe\uff1b<\/p>\n \uff08b\uff09\u9ad8\u5206\u8fa8\u7387EELS\u7684FeSe\/ST16<\/sup>O\uff08\uff03isotope_16\uff09\u548cFeSe\/ST18<\/sup>O\uff08\uff03isotope_18\uff09\u7684\u7535\u5b50\u80fd\u91cf\u635f\u5931\u8c31\u56fe\uff1b<\/p>\n \uff08c\uff09\u6cbf\u7740\u65b9\u5411\uff031\u7684M\u70b9\u7684\u5149\u7535\u5b50\u80fd\u8c31\u548c\u76f8\u5bf9\u4e8e\u80fd\u91cf\u7684\u76f8\u5e94\u7684\u4e8c\u6b21\u5fae\u5206\u8c31\uff1b<\/p>\n \uff08d\uff09\u80fd\u91cf\u5206\u5e03\u66f2\u7ebf\uff08EDCs\uff09\u7684\u4e8c\u9636\u5bfc\u6570\uff0c\u53cd\u6620\u4e86\uff03isotope_16\u548c\uff03isotope_18\u7684\u03b3\u5e26\u5728\u52a8\u91cf\u4f4d\u7f6ekA<\/sub>\u548ckB<\/sub>\uff08\u76f8\u5e94\u7684\u52a8\u91cf\u4f4d\u7f6e\u6807\u793a\u5728\uff08c\uff09\u56fe\u4e2d\uff09\u7684\u7ed3\u5408\u80fd\uff1b<\/p>\n \uff08e\uff09ES<\/sub>\uff0cES<\/sub>*<\/sup>\uff0c\u03a91<\/sub>\u548c\u03a92<\/sub>\u4e0e\u6c27\u8d28\u91cf\u7684\u5e73\u65b9\u6839\u7684\u5012\u6570\u7684\u51fd\u6570\u5173\u7cfb\uff1b<\/p>\n \uff08f\uff09ES<\/sub>\u548cES<\/sub>*<\/sup>\u4e0e\u6c27\u8d28\u91cf\u7684\u5e73\u65b9\u6839\u7684\u5012\u6570\u7684\u5173\u7cfb\uff0c\u53ca\u5bf9\u5176\u8fdb\u884c\u7684\u8fc7\u539f\u70b9\u7684\u7ebf\u6027\u62df\u5408\u3002<\/p>\n \u56fe<\/strong> 2 FeSe<\/strong>\u539a\u819c\u548c\u5404\u79cd<\/strong>1 ML FeSe\/ST16<\/sup>O<\/strong>\u6837\u54c1\u7684\u590d\u5236\u5e26\u5f3a\u5ea6<\/strong><\/p>\n \uff08a\uff09\u4e0d\u540c\u6837\u54c1\u5728\u8d39\u7c73\u80fd\u91cf\u5904\u7684\u5149\u7535\u5b50\u8c31\u5f3a\u5ea6\uff1b<\/p>\n \uff08b\uff09\u6cbf\u56fe\uff08a\uff09\u4e2d\u622a\u7ebf\u65b9\u5411\u7684\u8fc7M\u70b9\u7684\u5149\u7535\u5b50\u8c31\uff1b<\/p>\n \uff08c\uff09\u56f4\u7ed5M\u7684EDCs\uff0c\u7528\u4e8e\u5f3a\u5ea6\u5206\u6790\u7684\u80cc\u666f\uff0c\u6263\u9664\u80cc\u666f\u7684\u5149\u7535\u5b50\u8c31\uff0c\u4ee5\u53ca\u76f8\u5e94\u7684\u62df\u5408\u3002<\/p>\n \u56fe<\/strong> 3 <\/strong>\u8d85\u5bfc\u95f4\u9699\u53d8\u5316\u56fe<\/strong><\/p>\n \uff08a\uff09\u7535\u5b50\u53e3\u888b\u548c\u5404\u5411\u5f02\u6027\u8d85\u5bfc\u80fd\u9699\u7ed3\u6784\u7684\u793a\u610f\u56fe\uff0c\uff08\u63d2\u56fe\u662f\u6837\u54c1\uff036\u7684\u7ea2\u8272\u6b63\u65b9\u5f62\u90e8\u5206\u7684\u653e\u5927\u5149\u7535\u5b50\u8c31\u56fe\uff09\uff1b<\/p>\n \uff08b\uff09\u8d39\u7c73\u52a8\u91cfk1<\/sub>\u7684\u4e0d\u540c\u6837\u54c1\u7684EDCs\u4e0e\u6587\u732e\u4e2dTc = 60\u00b15K\u7684\u6837\u54c1EDCs\u7684\u6bd4\u8f83\u56fe\uff1b<\/p>\n \uff08c\uff09k1<\/sub>\u5904\u5bf9\u79f0\u5316EDCs\u548c\u8d85\u5bfc\u80fd\u9699\u62df\u5408\u56fe\uff1b<\/p>\n \uff08d\uff09\u662f\u56fe\uff08c\uff09\u6570\u636e\u548c\u62df\u5408\u66f2\u7ebf\u7684\u653e\u5927\u56fe\u8868\u660e\u8d85\u5bfc\u80fd\u9699\u53d8\u5316\uff1b<\/p>\n \uff08e\uff0cf\uff09\u52a8\u91cfk2<\/sub>\u5904\u7684EDCs\u548c\u8d85\u5bfc\u80fd\u9699\u03942<\/sub>\u3002<\/p>\n \u56fe<\/strong> 4 <\/strong>\u8d85\u5bfc\u80fd\u9699\u4e0e\u754c\u9762\u7535\u5b50<\/strong>–<\/strong>\u58f0\u5b50\u8026\u5408\u5f3a\u5ea6\u7684\u5173\u7cfb<\/strong><\/p>\n \u8d85\u5bfc\u80fd\u9699\u5c3a\u5bf8\uff08a\uff09\u03941<\/sub>\u548c\uff08b\uff09\u03942<\/sub>\u4e0e\u590d\u5236\u5e26\u03b3’\u548c\u4e3b\u5e26\u03b3\u4e4b\u95f4\u7684\u5f3a\u5ea6\u6bd4\u7684\u5173\u7cfb\uff08\u63d2\u56fe\u662f\u8d85\u5bfc\u80fd\u9699\u5c3a\u5bf8\u4e0e\u7535\u5b50\u63ba\u6742\u7684\u5173\u7cfb\uff09\u3002<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \u672c\u6587\u7ed3\u5408\u4e86\u9ad8\u8d28\u91cf\u7684FeSe\/STO\u7684\u8584\u819c\u751f\u957f\uff0c16<\/sup>O\u219418<\/sup>O\u540c\u4f4d\u7d20\u66ff\u4ee3\u7684\u754c\u9762\u8c03\u63a7\u53ca\u5168\u9762\u6df1\u5165\u7684\u89d2\u5206\u8fa8\u5149\u7535\u5b50\u80fd\u8c31\u7814\u7a76\uff0c\u5bf9\u9ad8\u8d28\u91cf\u548c\u53ef\u63a7\u63ba\u6742\u7684\u6837\u54c1\u8fdb\u884c\u4e86\u8d85\u5bfc\u80fd\u9699\u7684\u5b9a\u91cf\u5206\u6790\u3002\u786e\u5b9a\u4e86\u754c\u9762EPI\u7684\u5b58\u5728\uff0c\u8bc1\u660e\u4e86\u8d85\u5bfc\u914d\u5bf9\u5f3a\u5ea6\u4e0e\u754c\u9762EPI\u5f3a\u5ea6\u4e4b\u95f4\u5b58\u5728\u663e\u8457\u7684\u76f8\u5173\u6027\uff0c\u8fd9\u4e0eBCS\u56fe\u50cf\u6709\u5f88\u5927\u4e0d\u540c\uff0c\u4e3a\u8bc4\u4f30\u73b0\u6709\u7406\u8bba\u63d0\u4f9b\u4e86\u4e25\u683c\u7684\u6807\u51c6\u3002<\/p>\n<\/p>\n
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