{"id":143020,"date":"2018-06-26T14:00:19","date_gmt":"2018-06-26T06:00:19","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=143020"},"modified":"2018-06-24T22:12:25","modified_gmt":"2018-06-24T14:12:25","slug":"nature%e5%ad%90%e5%88%8a%ef%bc%9a%e8%b6%85%e5%af%bc%e9%94%a1%e9%98%b5%e5%88%97-%e7%9f%b3%e5%a2%a8%e7%83%af%e6%9d%82%e5%8c%96%e6%9d%90%e6%96%99%e7%9a%84%e5%8f%8c%e9%87%8f%e5%ad%90%e4%b8%b4%e7%95%8c","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=143020","title":{"rendered":"Nature\u5b50\u520a\uff1a\u8d85\u5bfc\u9521\u9635\u5217-\u77f3\u58a8\u70ef\u6742\u5316\u6750\u6599\u7684\u53cc\u91cf\u5b50\u4e34\u754c\u6027"},"content":{"rendered":"

\u3010\u524d\u8a00\u3011<\/strong><\/p>\n

\u5728\u4e8c\u7ef4\u8d85\u5bfc\u6750\u6599\u4e2d\u7ecf\u5e38\u89c2\u5bdf\u5230\u9ad8\u6e29\u8d85\u5bfc\u3001\u73bb\u8272\u91d1\u5c5e\u6001\u548c\u91cf\u5b50griffiths\u76f8\u7b49\u65b0\u7684\u91cf\u5b50\u73b0\u8c61\uff0c\u7814\u7a76\u4eba\u5458\u8ba4\u4e3a\u5b83\u4eec\u7684\u6027\u8d28\u53d7\u5728\u96f6\u5ea6\u4e0b\u8fde\u7eed\u91cf\u5b50\u76f8\u53d8(QPT)\u7684\u63a7\u5236\u3002QPT\u53d1\u751f\u5728\u96f6\u5ea6\uff0c\u8fd9\u662f\u7531\u4e8e\u975e\u70ed\u53c2\u6570\u4e0b\u54c8\u5bc6\u987f\u91cf\u7684\u53d8\u5316\uff0c\u5982\u65e0\u5e8f\u3001\u78c1\u573a\u6216\u63ba\u6742\u3002\u7531\u8fde\u7eedQPT\u4ea7\u751f\u7684\u91cf\u5b50\u4e34\u754c\u6027\u53ef\u4ee5\u63a7\u5236\u76f4\u5230\u975e\u5e38\u9ad8\u7684\u6e29\u5ea6\u7684\u76f8\u56fe\uff0c\u5e76\u4e14\u53ef\u4ee5\u7528\u6709\u9650\u5c3a\u5bf8\u6807\u5ea6(FSS)\u7406\u8bba\u6765\u63cf\u8ff0\u3002\u4f20\u7edf\u7684\u5782\u76f4\u78c1\u573a\u8c03\u8c10QPT\u5728\u975e\u6676\u6216\u7c92\u72b6\u4e8c\u7ef4\u8d85\u5bfc\u4f53\u4e2d\u603b\u662f\u5355\u4e00\u7684\u3002\u800c\u6700\u8fd1\u7684\u5b9e\u9a8c\u663e\u793a\u8d85\u5bfc\u4f53\u5230\u7edd\u7f18\u4f53\u7684\u76f8\u53d8(SIT)\u662f\u7531\u4e0eLaTiO3<\/sub>\/SrTiO3<\/sub>\u754c\u9762\u5904\u7684\u4e24\u4e2aQPTs\u76f8\u5bf9\u5e94\u7684\u78c1\u573a\u8c03\u8c10\u7684\u3002\u4ee5\u5f80\u7684\u7406\u8bba\u7814\u7a76\u8868\u660e\uff0c\u5373\u4f7f\u662f\u591a\u4e2aQPT\uff0cQPT\u4e5f\u53ef\u80fd\u662f\u7531\u4e8c\u7ef4\u8dc3\u8fc1\u9644\u8fd1\u81ea\u53d1\u5f62\u6210\u7684\u8d85\u5bfc\u4e0d\u5747\u5300\u6027\u5f15\u8d77\u7684\u3002\u56e0\u6b64\uff0c\u5728LaTiO3<\/sub>\/SrTiO3<\/sub>\u754c\u9762\u4e0a\u51fa\u73b0\u7684\u4e24\u4e2aQPT\u4e5f\u88ab\u8ba4\u4e3a\u4e0e\u4e0d\u5747\u5300\u8d85\u5bfc\u6709\u5173\uff0c\u5176\u4e2d\u4e00\u4e2aQPT\u5bf9\u5e94\u4e8e\u7531\u9ad8\u8fc1\u79fb\u7387\u8f7d\u6d41\u5b50(HMCs)\u5f62\u6210\u7684\u8d85\u5bfc\u7194\u6c60\u7684\u5c40\u90e8\u6709\u5e8f\uff0c\u53e6\u4e00\u4e2aQPT\u662f\u7531\u4e8e\u901a\u8fc72DEG\u8026\u5408\u7684\u8d85\u5bfc\u7194\u6c60\u4e4b\u95f4\u7684\u76f8\u5e72\u6027\u3002\u7136\u800c\uff0c\u7531\u4e8e\u5728LaTiO3<\/sub>\/SrTiO3<\/sub>\u754c\u9762\u4e0a\u65e0\u6cd5\u76ee\u89c6\u89c2\u5bdf\u5230\u8d85\u5bfc\u6c34\u5751\u548c2DEG\u7684\u5b58\u5728\uff0c2D\u8d85\u5bfc\u4f53\u4e2d\u591a\u4e2aQPTs\u7684\u7269\u7406\u673a\u5236\u4ecd\u5b58\u5728\u4e89\u8bae\u3002\u4e3a\u4e86\u9610\u660e\u89c2\u6d4b\u5230\u7684\u591a\u4e2aQPTs\u7684\u8d77\u6e90\uff0c\u5b9e\u8d28\u4e0a\u9700\u8981\u4e00\u4e2a\u53ef\u89c6\u5316\u5e73\u53f0\u6765\u518d\u73b0\u7531LaTiO3<\/sub>\/SrTiO3<\/sub>\u754c\u9762\u5904\u7684\u6447\u6446\u8d85\u5bfcpuddles – 2DEG\u7cfb\u7edf\u7ec4\u6210\u7684\u7cfb\u7edf\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u6765\u81ea\u4e2d\u79d1\u9662\u5fae\u7cfb\u7edf\u6240\u7684\u72c4\u589e\u5cf0\u7814\u7a76\u5458\u548c\u80e1\u6d9b\u526f\u7814\u7a76\u5458\uff08\u5171\u540c\u901a\u8baf\uff09<\/strong>\u5728Nature Communications<\/strong>\u4e0a\u53d1\u8868\u6587\u7ae0\uff0c\u9898\u4e3a\uff1aDouble quantum criticality in superconducting tin arrays-graphene hybrid<\/strong>\u3002\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u5728\u5355\u6676\u5355\u5c42\u77f3\u58a8\u70ef\u4e0a\u6c89\u79ef\u9521\u7eb3\u7c73\u5c9b\u9635\u5217\uff0c\u4eba\u5de5\u6784\u5efa\u8d85\u5bfcpuddles – 2DEG\u6742\u5316\u4f53\u7cfb\uff0c\u518d\u73b0\u4e86\u4e24\u79cd\u91cf\u5b50\u4e34\u754c\u884c\u4e3a\u3002\u901a\u8fc7\u5bf9\u78c1\u963b\u7684\u6709\u9650\u5c3a\u5bf8\u6807\u5ea6\u5206\u6790\uff0c\u7814\u7a76\u4eba\u5458\u53d1\u73b0\u8fd9\u4e24\u79cd\u91cf\u5b50\u4e34\u754c\u884c\u4e3a\u5206\u522b\u6765\u81ea\u5c9b\u5185\u548c\u5c9b\u95f4\u7684\u76f8\u4f4d\u76f8\u5e72\uff0c\u76f8\u4f4d\u56fe\u8fdb\u4e00\u6b65\u8bf4\u660e\u4e86\u8fd9\u4e00\u70b9\u3002\u8fd9\u9879\u5de5\u4f5c\u4e3a\u7814\u7a76\u4e8c\u7ef4\u7cfb\u7edf\u4e2d\u7684\u8d85\u5bfc\u91cf\u5b50\u76f8\u53d8\u63d0\u4f9b\u4e86\u5e73\u53f0\uff0c\u6709\u52a9\u4e8e\u5c06\u8d85\u5bfc\u5668\u4ef6\u96c6\u6210\u5230\u534a\u5bfc\u4f53\u6280\u672f\u4e2d\u3002<\/p>\n

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

\u56fe1. \u57284\u82f1\u5bf8\u7684\u5185\u5728\u9517\u6676\u7247\u5185\u7684\u77f3\u58a8\u70ef\u2014\u2014\u9521\u7eb3\u7c73\u5c9b\u6742\u5316\u7cfb\u7edf<\/strong><\/p>\n

\"\"<\/p>\n

a\u7531\u9521\u7eb3\u7c73\u5c9b\u4fee\u9970\u7684\u5355\u6676\u5355\u5c42\u77f3\u58a8\u70ef\u7ec4\u6210\u7684\u8bbe\u8ba1\u7cfb\u7edf\u7684\u793a\u610f\u56fe;<\/p>\n

b\u539f\u5b50\u529b\u663e\u5fae\u955c(AFM)\u5728\u5355\u6676\u77f3\u58a8\u70ef\u4e0a\u81ea\u7ec4\u88c5\u539a\u5ea6\u4e3a10 nm\u7684\u4e0d\u8fde\u7eed\u9521\u5c9b\u7684\u56fe\u50cf;<\/p>\n

c .\u77f3\u58a8\u70ef\u4e0a\u622a\u9762\u4e3a10 nm\u539a\u7684\u4e0d\u8fde\u7eed\u9521\u7eb3\u7c73\u5c9b\u7684STEM\u56fe\u50cf\uff0c\u4ee5\u53ca\u663e\u793aSn\u548cGe\u5206\u5e03\u7684\u76f8\u5e94STEM – EDS\u6620\u5c04\u56fe\u50cf;<\/p>\n

d\u57284\u82f1\u5bf8\u672c\u5f81\u9517\u6676\u7247\u4e0a\u5236\u9020\u7684\u6d4b\u8bd5\u5668\u4ef6\u77e9\u9635\u7684\u7167\u7247;<\/p>\n

e\u653e\u5927\u56fe\u663e\u793a\u4e86\u7ec4\u88c5\u6210\u4e00\u4e2a\u9635\u5217\u7684\u4e5d\u4e2a\u5355\u72ec\u7684\u8d85\u5bfc\u5668\u4ef6;<\/p>\n

\u56fe2. \u77f3\u58a8\u70ef-\u9521\u7eb3\u7c73\u5c9b\u9635\u5217\u7684\u4e8c\u7ef4\u8d85\u5bfc\u7535\u6027<\/strong><\/p>\n

\"\"<\/p>\n

a\u56db\u7aef\u8584\u5c42\u7535\u963b(Rs)\u4e0e\u6e29\u5ea6(T)\u7684\u5173\u7cfb;<\/p>\n

b \u4f5c\u4e3a\u89d2\u5ea6\u03b8\u7684\u51fd\u6570\u7684\u4e0a\u4e34\u754c\u573aHc2<\/sub>;<\/p>\n

c \u5728\u4e0d\u540c\u6e29\u5ea6\u4e0b\uff0c\u7535\u538b-\u7535\u6d41(V-I)\u66f2\u7ebf\u5448\u5bf9\u6570\u6807\u5ea6;<\/p>\n

\u56fe3. \u77f3\u58a8\u70ef-\u9521\u7eb3\u7c73\u5c9b\u9635\u5217\u4e2d\u89c2\u5bdf\u5230\u4e24\u4e2aQPTs<\/strong><\/p>\n

\"\"<\/p>\n

a\u5bf9\u4e8e0\u81f33\u5343\u6b27\u7684\u4e0d\u540c\u78c1\u573aH\uff0c\u8584\u5c42\u7535\u963bRs\u662f\u6e29\u5ea6T\u7684\u51fd\u6570;<\/p>\n

b\u3001c\u5206\u522b\u4ece\u78c1\u573a\u4e3a2.4\u81f33\u5343\u6b27\u548c1.4\u81f32.4\u5343\u6b27\u7684\u4f4e\u6e29\u533a(0.05\u81f30.30\u5343\u6b27)\u548c\u9ad8\u6e29\u533a( 2.0\u81f33.0\u5343\u6b27)\u6536\u96c6\u7684\u8be6\u7ec6\u6570\u636e;<\/p>\n

\u56fe4. \u77f3\u58a8\u70ef-\u9521\u7eb3\u7c73\u5c9b\u9635\u5217\u4e2d\u8d85\u5bfc\u4f53-\u7edd\u7f18\u4f53\u91cf\u5b50\u76f8\u53d8\u7684\u6807\u5ea6\u884c\u4e3a<\/strong><\/p>\n

\"\"<\/p>\n

a\u5bf9\u4e8e2\u81f32.5k\u7684\u4e0d\u540c\u6e29\u5ea6\uff0c\u65b9\u5757\u7535\u963bRs\u4e0e\u78c1\u573aH\u7684\u51fd\u6570\uff1b<\/p>\n

b\u901a\u8fc7\u4f18\u5316a\u4e2d\u76f8\u540c\u6570\u636e\u5f97\u5230\u7684QPT\u7684\u6709\u9650\u5c3a\u5bf8\u6807\u5ea6\u5206\u6790\uff1b<\/p>\n

c \u5bf9\u4e8e0.05\u81f30.2k\u7684\u4e0d\u540c\u6e29\u5ea6\uff0c\u65b9\u5757\u7535\u963bRs\u4e0e\u78c1\u573aH\u7684\u51fd\u6570\uff1b<\/p>\n

d\u901a\u8fc7\u4f18\u5316c\u4e2d\u76f8\u540c\u6570\u636e\u5f97\u5230\u7684QPT\u7684\u6709\u9650\u5c3a\u5bf8\u6807\u5ea6\u5206\u6790\uff1b<\/p>\n

\u56fe5. \u77f3\u58a8\u70ef\u2014\u2014\u9521\u7eb3\u7c73\u5c9b\u6742\u5316\u9635\u5217\u7684H\u2013T\u76f8\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

Tpeak1<\/sub> (\u9ed1\u8272\u6b63\u65b9\u5f62)\u3001Tpeak2<\/sub> (\u7ea2\u8272\u5706\u5708)\u3001HTCR (\u9ed1\u8272\u5b9e\u7ebf)\u548cLTCR (\u7ea2\u8272\u5b9e\u7ebf)\u5c06\u8d85\u5bfc\u533a(d\u03c1<\/sub>\/dT<\/sub>\u2009>\u20090)\u548c\u5f31\u5b9a\u4f4d\u91d1\u5c5e\u533a(d\u03c1<\/sub>\/dT<\/sub>\u2009<\u20090)\u5206\u5f00\u3002<\/p>\n

\u3010\u603b\u7ed3\u3011<\/strong><\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0c\u5728\u672c\u5f81\u9517(110)\u6676\u7247\u4e0a\u5408\u6210\u4e86\u7531\u8d85\u5bfc\u9521\u7eb3\u7c73\u5c9b\u548c\u5355\u6676\u5355\u5c42\u77f3\u58a8\u70ef\u7ec4\u6210\u7684\u4e8c\u7ef4\u8d85\u5bfc\u4f53\u3002\u8fd9\u79cd\u6df7\u5408\u7cfb\u7edf\u53ef\u4ee5\u76f4\u89c2\u5730\u518d\u73b0\u6c27\u5316\u7269\u754c\u9762\u5904\u5047\u8bbe\u7684\u8d85\u5bfcpuddles – 2DEG\u7cfb\u7edf\uff0c\u5e76\u4e14\u7531\u78c1\u573a\u611f\u5e94\u7684\u9884\u671f\u4e24\u4e2aQPTs\u5982\u901a\u8fc7\u78c1\u963b\u7684FSS\u5206\u6790\u8bc6\u522b\u7684\u90a3\u6837\u518d\u73b0\u3002\u6784\u9020\u7684H – T\u76f8\u56fe\u8868\u660e\uff0c\u4e24\u4e2aQPTs\u5206\u522b\u5bf9\u5e94\u4e8e\u9521\u7eb3\u7c73\u5c9b\u5185\u8d85\u5bfc\u6027\u548c\u9521\u7eb3\u7c73\u5c9b\u95f4\u8d85\u5bfc\u6027\u3002\u672c\u7814\u7a76\u4e3a\u4e8c\u7ef4\u8d85\u5bfc\u91cf\u5b50\u529b\u5b66\u7684\u7814\u7a76\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7406\u60f3\u7684\u53ef\u89c6\u5316\u5e73\u53f0\u3002\u6b64\u5916\uff0c\u6784\u5efa\u5728\u534a\u5bfc\u4f53\u9517\u6676\u7247\u4e0a\u7684\u8d85\u5bfc\u5668\u4ef6\u9635\u5217\u4e3a\u8d85\u5bfc\u5668\u4ef6\u4e0e\u73b0\u6709\u534a\u5bfc\u4f53\u6280\u672f\u7684\u96c6\u6210\u63d0\u4f9b\u4e86\u5de8\u5927\u7684\u6f5c\u529b\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Double quantum criticality in superconducting tin arrays-graphene hybrid<\/a>, (Nature Comm, 2018, DOI: 10.1038\/s41467-018-04606-w)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4Z. Chen\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\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\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u5230\u6750\u6599\u4eba\u5ba3\u4f20\u79d1\u6280\u6210\u679c\u5e76\u5bf9\u6587\u732e\u8fdb\u884c\u6df1\u5165\u89e3\u8bfb\uff0c\u6295\u7a3f\u90ae\u7bb1\uff1atougao@cailiaoren.com\u3002<\/p>\n

\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu\u3002<\/p>\n

\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<\/strong>\u6d4b\u8bd5\u8c37<\/strong><\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

\u3010\u524d\u8a00\u3011 \u5728\u4e8c\u7ef4\u8d85\u5bfc\u6750\u6599\u4e2d\u7ecf\u5e38\u89c2\u5bdf\u5230\u9ad8\u6e29\u8d85\u5bfc\u3001\u73bb\u8272\u91d1\u5c5e\u6001\u548c\u91cf\u5b50griffiths\u76f8\u7b49\u65b0\u7684\u91cf\u5b50\u73b0\u8c61\uff0c\u7814\u7a76\u4eba\u5458\u8ba4\u4e3a\u5b83\u4eec\u7684\u6027\u8d28\u53d7\u5728\u96f6\u5ea6\u4e0b\u8fde\u7eed\u91cf\u5b50\u76f8\u53d8(QPT)\u7684\u63a7\u5236\u3002…<\/p>\n","protected":false},"author":3029,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215],"tags":[3348],"class_list":["post-143020","post","type-post","status-publish","format-standard","hentry","category-jiedu","tag-3348"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/143020"}],"collection":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/users\/3029"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=143020"}],"version-history":[{"count":6,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/143020\/revisions"}],"predecessor-version":[{"id":143757,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/143020\/revisions\/143757"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=143020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=143020"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=143020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}