{"id":128833,"date":"2018-03-07T08:26:50","date_gmt":"2018-03-07T00:26:50","guid":{"rendered":"\/\/m.iemloyee.com\/?p=128833"},"modified":"2018-03-07T10:12:17","modified_gmt":"2018-03-07T02:12:17","slug":"%e6%98%a8%e6%97%a5nature%e4%ba%8c%e8%bf%9e%e5%8f%91%e8%af%b4%e4%bb%80%e4%b9%88-%e7%9f%b3%e5%a2%a8%e7%83%af%e4%b8%ad%e7%9a%84%e6%96%b0%e7%94%b5%e5%ad%90%e6%80%81","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=128833","title":{"rendered":"\u6628\u65e5Nature\u4e8c\u8fde\u53d1\u8bf4\u4ec0\u4e48\u2014\u2014\u77f3\u58a8\u70ef\u4e2d\u7684\u65b0\u7535\u5b50\u6001"},"content":{"rendered":"
\u6628\u5929\uff0c\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u7684Pablo Jarillo-Herrero\u3001\u66f9\u539f\u5728\u9b54\u89d2\u626d\u66f2\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\u53d1\u73b0\u65b0\u7684\u7535\u5b50\u6001\uff0c\u53ef\u4ee5\u7b80\u5355\u5b9e\u73b0\u7edd\u7f18\u4f53\u5230\u8d85\u5bfc\u4f53\u7684\u8f6c\u53d8\uff0c\u6253\u5f00\u4e86\u975e\u5e38\u89c4\u8d85\u5bfc\u4f53\u7814\u7a76\u7684\u5927\u95e8\uff0c\u8be5\u6210\u679c\u4ee5\u201c\u80cc\u9760\u80cc\u201d\u5f62\u5f0f\u520a\u767b\u5728Nature\u5b98\u7f51\u4e0a\u3002<\/p>\n
\u00a0<\/b><\/strong>Nature<\/b><\/strong>\uff1a\u5728\u9b54\u89d2\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u534a\u586b\u5145\u65f6\u7684\u76f8\u5173\u7edd\u7f18\u4f53\u884c\u4e3a<\/b><\/strong><\/p>\n \u3010\u5f15\u8a00\u3011<\/b><\/strong><\/p>\n \u8303\u5fb7\u534e\u5f02\u8d28\u7ed3\u6784\u662f\u4e8c\u5143\u6784\u7b51\u5355\u5143\u5782\u76f4\u5806\u53e0\u800c\u6210\uff0c\u5728\u4e8c\u7ef4\u6750\u6599\u4e30\u5bcc\u7684\u529f\u80fd\u6027\u57fa\u7840\u4e0a\uff0c\u53ef\u4ee5\u5b9e\u73b0\u66f4\u591a\u7684\u5de5\u7a0b\u5316\u64cd\u7eb5\u3002\u5176\u4e2d\u4e00\u4e2a\u65b9\u5411\uff0c\u5c31\u662f\u901a\u8fc7\u63a7\u5236\u5c42\u95f4\u626d\u66f2\u89d2\u5ea6\uff0c\u6765\u8c03\u63a7\u8303\u5fb7\u534e\u5f02\u8d28\u7ed3\u7684\u7535\u5b50\u7ed3\u6784\u3002\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u5173\u4e8e\u626d\u66f2\u89d2\u5ea6\u5728\u8303\u5fb7\u74e6\u5c14\u65af\u5f02\u8d28\u7ed3\u6784\u4e2d\u6548\u5e94\u7684\u7814\u7a76\u4e3b\u8981\u96c6\u4e2d\u5728\u77f3\u58a8\u70ef\/\u516d\u65b9\u6c2e\u5316\u787c\u626d\u66f2\u7ed3\u6784\u4e2d\uff0c\u7531\u4e8e\u5728\u516d\u65b9\u6c2e\u5316\u787c\u4e2d\u5b58\u5728\u5927\u5e26\u9699\uff0c\u5176\u8868\u73b0\u51fa\u76f8\u5bf9\u8f83\u5f31\u7684\u5c42\u95f4\u76f8\u4e92\u4f5c\u7528\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/b><\/strong><\/p>\n \u8fd1\u65e5\uff0c\u5728\u7f8e\u56fd<\/b><\/strong>\u9ebb\u7701\u7406\u5de5\u5b66\u9662<\/b><\/strong>P. Jarillo-Herrero\u6559\u6388<\/b><\/strong>\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/b><\/strong>\u56e2\u961f<\/b><\/strong>\u548c\u66f9\u539f\uff08\u7b2c\u4e00\u4f5c\u8005\uff09<\/b><\/strong>\u7684\u5e26\u9886\u4e0b\uff0c\u4e0e\u7f8e\u56fd\u54c8\u4f5b\u5927\u5b66\uff0c\u65e5\u672c\u56fd\u7acb\u6750\u6599\u79d1\u5b66\u7814\u7a76\u6240<\/b><\/strong>\u5408\u4f5c\uff0c\u62a5\u9053\u4e86\u5f53\u4e24\u4e2a\u77f3\u58a8\u70ef\u7247\u6750\u626d\u66f2\u63a5\u8fd1\u7406\u8bba\u9884\u6d4b\u7684\u201c\u9b54\u89d2\u201d\u65f6\uff0c\u7531\u4e8e\u5f3a\u7684\u5c42\u95f4\u8026\u5408\uff0c\u4ea7\u751f\u7684\u7535\u8377\u4e2d\u6027\u9644\u8fd1\u7684\u80fd\u5e26\u7ed3\u6784\u53d8\u5f97\u5e73\u5766\u3002\u8fd9\u4e9b\u6241\u5e73\u5e26\u5728\u534a\u586b\u5145\u65f6\u8868\u73b0\u51fa\u7edd\u7f18\u72b6\u6001\uff0c\u4ea7\u751f\u7684\u65b0\u7535\u5b50\u6001\u662fMott\u7edd\u7f18\u4f53\u6001\uff0c\u6765\u6e90\u4e8e\u7535\u5b50\u4e4b\u95f4\u7684\u5f3a\u6392\u65a5\u4f5c\u7528\u3002\u9b54\u89d2\u626d\u66f2\u53cc\u5c42\u77f3\u58a8\u70ef\u7684\u72ec\u7279\u6027\u8d28\u53ef\u80fd\u4e3a\u65e0\u78c1\u573a\u7684\u4e8c\u7ef4\u5e73\u53f0\u4e0a\u7684\u591a\u4f53\u91cf\u5b50\u76f8\u4f4d\u5f00\u542f\u65b0\u7684\u8fd0\u52a8\u573a\u3002\u76f8\u5173\u6210\u679c\u4ee5\u9898\u4e3a\u201cCorrelated insulator behaviour at half-filling in magic-angle graphene superlattices<\/b><\/strong>\u201d\u53d1\u8868\u5728\u4e86Nature<\/b><\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n \u56fe<\/b><\/strong>1 <\/b><\/strong>\u626d\u66f2\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\u7684\u7535\u5b50\u80fd\u5e26\u7ed3\u6784<\/b><\/strong><\/p>\n \uff08a\uff09\u626d\u66f2\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\uff08TwBLG\uff09\u5668\u4ef6\u7684\u793a\u610f\u56fe\uff1b<\/p>\n \uff08b\uff09\u5728TwBLG\u4e2d\u770b\u5230\u7684\u83ab\u5c14\u6761\u7eb9\uff1b<\/p>\n \uff08c\uff091.08\u00b0TwBLG\u7684\u80fd\u5e26\u7ed3\u6784\uff1b<\/p>\n \uff08d\uff09MBZ\u7531\u6765\u81ea\u4e24\u5c42\u7684\u4e24\u4e2aK\uff08K’\uff09\u6ce2\u77e2\u91cf\u4e4b\u95f4\u7684\u5dee\u5f02\u6784\u6210\uff1b<\/p>\n \uff08e-g\uff09\u4e0d\u540c\u5939\u5c42\u5c42\u95f4\u6742\u4ea4\u6548\u679c\u56fe\uff1b<\/p>\n \uff08h\uff09\u8ba1\u7b971.08\u00b0\u65f6E> 0\u7684\u5e73\u5e26\u7684\u5c40\u90e8\u6001\u5bc6\u5ea6\uff08LDOS\uff09\uff1b<\/p>\n \uff08i\uff09\u5806\u53e0\u987a\u5e8f\u7684\u7b80\u5316\u6a21\u578b\u7684\u4fef\u89c6\u56fe\u3002<\/p>\n \u56fe<\/b><\/strong>2<\/b><\/strong>\u00a0<\/b><\/strong>\u626d\u66f2\u53cc\u5c42\u77f3\u58a8\u70ef<\/b><\/strong>\u5668\u4ef6D1<\/b><\/strong>\u7684<\/b><\/strong>\u7535\u5bfc<\/b><\/strong><\/p>\n \uff08a\uff09\u75281.08\u00b0\u6d4b\u91cf\u9b54\u89d2TwBLG\u5668\u4ef6D1\u7684\u7535\u5bfc\uff0c\u63d2\u56fe\u663e\u793a\u4e86\u56db\u79cd\u4e0d\u540c\u5668\u4ef6\u4e2d\u534a\u586b\u5145\u7edd\u7f18\u76f8\uff08HFIP\uff09\u7684\u5bc6\u5ea6\u4f4d\u7f6e\uff1b<\/p>\n \uff08b\uff09D1\u4e2d\u4e24\u4e2aHFIP\u7684\u6700\u5c0f\u7535\u5bfc\u503c\uff1b<\/p>\n \uff08c\uff0cd\uff09\u5206\u522b\u5728p\u4fa7\u548cn\u4fa7HFIP\u9644\u8fd1\uff0cD1\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u7535\u5bfc\u4ece0.3\u301c1.7K\u3002<\/p>\n \u56fe<\/b><\/strong>3<\/b><\/strong>\u00a0<\/b><\/strong>\u626d\u66f2\u53cc\u5c42\u77f3\u58a8\u70ef<\/b><\/strong>\u5668\u4ef6D<\/b><\/strong>2<\/b><\/strong>\u7684<\/b><\/strong>\u7535\u5bb9\u6d4b\u91cf<\/b><\/strong><\/p>\n \uff08a\uff09\u5668\u4ef6D2\u57280.3 K\uff08\u84dd\u8272\u7ebf\uff09\u548c2 K\uff08\u7c89\u8272\u7ebf\uff09\u5904\u7684\u7535\u5bb9\u6d4b\u91cf\uff1b<\/p>\n \uff08b\uff09\u4ece\u6e29\u5ea6\u76f8\u5173\u7684SdH\u632f\u8361\u4e2d\u63d0\u53d6\u7684\u6709\u6548\u8d28\u91cfm*<\/sup>\u548c\u632f\u8361\u9891\u7387fSdH\uff1b<\/p>\n \uff08c\uff09\u57284.5K\u81f3120K\u7684\u4e0d\u540c\u6e29\u5ea6\u4e0b\uff0cD1\u7684\u7535\u5bfc\u4e0e\u6805\u6781\u7684\u76f8\u5173\u6027\uff1b<\/p>\n \uff08d\uff09TwBLG\u4e2dE> 0\u5e73\u5e26\u5206\u652f\u7684\u5e26\u5bbdW\u4e0e\u4e0d\u540c\u626d\u8f6c\u89d2\u7684\u73b0\u573a\u80fd\u91cfU\u4e4b\u95f4\u7684\u6bd4\u8f83\u3002<\/p>\n \u56fe<\/b><\/strong>4<\/b><\/strong>\u00a0<\/b><\/strong>\u626d\u66f2\u53cc\u5c42\u77f3\u58a8\u70ef<\/b><\/strong>\u5668\u4ef6D<\/b><\/strong>2<\/b><\/strong>\u7684<\/b><\/strong>\u7535\u5bb9\u6d4b\u91cf<\/b><\/strong><\/p>\n \uff08a\uff0cb\uff09\u5206\u522b\u5728p\u4fa7\u548cn\u4fa7\uff0cD1\u7684HFIP\u7535\u5bfc\u7684B\u22a5<\/sub>\u4f9d\u8d56\u6027\uff1b<\/p>\n \uff08c\uff09\u4e0d\u540c\u78c1\u573a\u4e0bp\u4fa7HFIP\u7535\u5bfc\u7684\u963f\u4ed1\u5c3c\u4e4c\u65af\u66f2\u7ebf\u56fe\uff1b<\/p>\n \uff08d-f\uff09\u4e0d\u540c\u72b6\u6001\u56fe\uff08DOS\uff09\u7684\u5bc6\u5ea6<\/p>\n \u3010\u5c0f\u7ed3<\/b><\/strong>\u3011<\/p>\n \u8be5\u56e2\u961f\u7684\u7814\u7a76\u8868\u660e\uff0c\u77f3\u58a8\u70ef\u53ef\u4ee5\u901a\u8fc7\u8303\u5fb7\u534e\u5de5\u7a0b\u8f6c\u5316\u4e3a\u5e73\u8861\u5e26\u7cfb\u7edf\uff0c\u5176\u4e2d\u76f8\u5173\u6548\u5e94\u8d77\u7740\u57fa\u7840\u6027\u4f5c\u7528\u3002\u9b54\u89d2TwBLG\u4e3a\u7814\u7a76Mott\u7edd\u7f18\u4f53\u6001\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b0\u7684\u5e73\u53f0\uff0c\u5b83\u53ef\u4ee5\u63d0\u4f9b\u5bf9\u5f3a\u5173\u8054\u6750\u6599\u7684\u6d1e\u5bdf\u529b\uff0c\u7279\u522b\u662f\u9ad8\u6e29\u8d85\u5bfc\u6027\u3002\u4e09\u89d2\u5f62\u6676\u683c\u4e0a\u7684\u81ea\u65cb\u548c\u8c37\u7ed3\u5408\u81ea\u7531\u5ea6\u7684\u4e30\u5bcc\u6027\u4e5f\u53ef\u4ee5\u5f15\u8d77\u5982\u91cf\u5b50\u81ea\u65cb\u6db2\u4f53\u7b49\u5916\u6765\u91cf\u5b50\u76f8\u4f4d\u3002<\/p>\n \u6587\u732e\u94fe\u63a5\uff1a<\/b><\/strong>Correlated insulator behaviour at half-filling in magic-angle graphene superlattices<\/u><\/a>\uff08Nature,\u00a02018, DOI: 10.1038\/nature26154\uff09<\/p>\n Nature<\/b><\/strong>\uff1a\u9b54\u89d2\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u7684\u975e\u5e38\u89c4\u8d85\u5bfc\u6027<\/b><\/strong><\/p>\n \u3010\u5f15\u8a00\u3011<\/b><\/strong><\/p>\n \u6570\u5341\u5e74\u6765\uff0c\u5f3a\u5173\u8054\u7535\u5b50\u6750\u6599\u7684\u884c\u4e3a\u4ee4\u7269\u7406\u5b66\u5bb6\u611f\u5230\u56f0\u60d1\uff0c\u7279\u522b\u662f\u975e\u5e38\u89c4\u8d85\u5bfc\u4f53\u7684\u884c\u4e3a\u3002\u8fd9\u79cd\u56f0\u96be\u6fc0\u53d1\u4e86\u65b0\u7684\u7814\u7a76\u8303\u5f0f\uff0c\u4f8b\u5982\u6a21\u62df\u91cf\u5b50\u6750\u6599\u7684\u8d85\u51b7\u539f\u5b50\u6676\u683c\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/b><\/strong><\/p>\n \u8fd1\u65e5\uff0c\u5728\u7f8e\u56fd<\/b><\/strong>\u9ebb\u7701\u7406\u5de5\u5b66\u9662<\/b><\/strong>P. Jarillo-Herrero\u6559\u6388<\/b><\/strong>\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/b><\/strong>\u548c\u66f9\u539f\uff08\u7b2c\u4e00\u4f5c\u8005\uff09<\/b><\/strong>\u56e2\u961f<\/b><\/strong>\u7684\u5e26\u9886\u4e0b\uff0c\u4e0e\u7f8e\u56fd\u54c8\u4f5b\u5927\u5b66\uff0c\u65e5\u672c\u56fd\u7acb\u6750\u6599\u79d1\u5b66\u7814\u7a76\u6240<\/b><\/strong>\u5408\u4f5c\uff0c\u62a5\u9053\u4e86\u5806\u53e0\u5177\u6709\u5c0f\u626d\u66f2\u89d2\u7684\u4e24\u4e2a\u77f3\u58a8\u70ef\u7247\u4e2d\u4e8c\u7ef4\u8d85\u6676\u683c\uff0c\u4ea7\u751f\u4e00\u79cd\u5168\u65b0\u7684\u7535\u5b50\u6001\u2014\u2014\u8d85\u5bfc\u6001\u3002\u5f53\u65cb\u8f6c\u89d2\u5ea6\u5c0f\u5230\u9b54\u89d2\u65f6\uff08<1.05\u00b0\uff09\uff0c\u626d\u66f2\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\u5782\u76f4\u5806\u53e0\u7684\u539f\u5b50\u533a\u57df\u4f1a\u5f62\u6210\u7a84\u7535\u5b50\u80fd\u5e26\uff0c\u7535\u5b50\u76f8\u4e92\u4f5c\u7528\u6548\u5e94\u589e\u9879\uff0c\u4ece\u800c\u4ea7\u751f\u975e\u5bfc\u7535\u7684Mott\u7edd\u7f18\u6001\u3002\u5728Mott\u7edd\u7f18\u6001\u60c5\u51b5\u4e0b\u52a0\u5165\u5c11\u91cf\u7535\u8377\u8f7d\u6d41\u5b50\uff0c\u5c31\u53ef\u4ee5\u6210\u529f\u8f6c\u53d8\u4e3a\u8d85\u5bfc\u6001\u3002\u76f8\u5173\u6210\u679c\u4ee5\u9898\u4e3a\u201cUnconventional superconductivity in magic-angle graphene superlattices<\/b><\/strong>\u201d\u53d1\u8868\u5728\u4e86Nature<\/b><\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n \u56fe<\/b><\/strong>1 \u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u76842D\u8d85\u5bfc\u7535\u6027<\/b><\/strong><\/p>\n \uff08a\uff09\u5178\u578b\u7684\u626d\u66f2\u53cc\u5c42\u77f3\u58a8\u70ef\uff08TBG\uff09\u88c5\u7f6e\u548c\u56db\u63a2\u9488\u6d4b\u91cf\u65b9\u6848\u7684\u793a\u610f\u56fe\uff1b<\/p>\n \uff08b\uff09\u5728\u4e24\u4e2a\u5668\u4ef6M1\u548cM2\u4e2d\u6d4b\u91cf\u56db\u63a2\u9488\u7535\u963bRxx = Vxx\/I \uff0c\u5176\u4e2d\u626d\u8f6c\u89d2\u5206\u522b\u4e3a\u03b8= 1.16\u00b0\u548c\u03b8= 1.05\u00b0\u3002\u63d2\u56fe\u662f\u8bbe\u5907M1\u7684\u56fe\u50cf\uff1b<\/p>\n \uff08c\uff09\u5728\u8d85\u6676\u683c\u7684\u7b2c\u4e00\u4e2a\u5c0f\u5e03\u91cc\u6e0a\u533a\uff08MBZ\uff09\u4e2d\uff0cTBG\u5728\u03b8= 1.05\u00b0\u5904\u7684\u80fd\u5e26\u7ed3\u6784\uff1b<\/p>\n \uff08d\uff09\uff08c\uff09\u6240\u793a\u5e26\u7684\u72b6\u6001\u5bc6\u5ea6\uff08DOS\uff09\uff0c\u653e\u5927\u5230-10\u301c10meV\uff1b<\/p>\n \uff08e\uff09\u5728n = -1.44\u00d71012cm-2<\/sup>\u548c\u5404\u79cd\u6e29\u5ea6\u4e0b\u6d4b\u91cf\u7684\u5668\u4ef6M2\u7684I-V\u66f2\u7ebf\u3002<\/p>\n \u56fe<\/b><\/strong>2<\/b><\/strong>\u00a0\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u7684\u53ef<\/b><\/strong>\u8c03\u8c10<\/b><\/strong>\u8d85\u5bfc\u6027<\/b><\/strong><\/p>\n \uff08a\uff09\u5728\u96f6\u78c1\u573a\uff08\u7ea2\u8272\u7ebf\uff09\u548cB\u22a5<\/sub>= 0.4 T\uff08\u84dd\u8272\u7ebf\uff09\u7684\u5782\u76f4\u573a\u4e2d\u6d4b\u5f97\u7684\u5668\u4ef6M1\u7684\u53cc\u63a2\u9488G2\u7535\u5bfc\uff1b<\/p>\n \uff08b\uff09\u5728\uff08a\uff09\u4e2d\u7531\u7c89\u7ea2\u8272\u865a\u7ebf\u5305\u56f4\u7684\u533a\u57df\u5bf9\u5e94\u7684\u5bc6\u5ea6\u4e0b\u6d4b\u5f97\u7684\u56db\u63a2\u9488\u7535\u963bRxx\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb\uff1b<\/p>\n \uff08c\uff09\u5728\u88c5\u7f6eM2\u4e2d\u7c89\u7ea2\u8272\u865a\u7ebf\u5305\u56f4\u7684\u533a\u57df\u5bf9\u5e94\u7684\u5bc6\u5ea6\u4e0b\u6d4b\u5f97\u7684\u56db\u63a2\u9488\u7535\u963bRxx\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n \u56fe<\/b><\/strong>3<\/b><\/strong>\u00a0\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u8d85\u5bfc\u6001\u7684\u78c1\u573a\u54cd\u5e94<\/b><\/strong><\/p>\n \uff08a\uff0cb\uff09\u56db\u63a2\u9488\u7535\u963b\u5206\u522b\u4f5c\u4e3a\u5668\u4ef6M1\u548cM2\u4e2d\u5bc6\u5ea6n\u548c\u5782\u76f4\u78c1\u573aB\u22a5<\/sub>\u7684\u51fd\u6570\uff1b<\/p>\n \uff08c\uff09\u5668\u4ef6M2\u6d4b\u91cf\u7684\u4e0d\u540cB\u22a5<\/sub>\u503c\u7684\u5dee\u5206\u7535\u963bdVxx<\/sub>\/dI\u4e0e\u76f4\u6d41\u504f\u7f6e\u7535\u6d41I\u7684\u5173\u7cfb\uff1b<\/p>\n \uff08d\uff09\u5668\u4ef6M1\u6d4b\u91cf\u7684\u4e0d\u540cB\u22a5<\/sub>\u503c\u7684Rxx<\/sub>-T\u66f2\u7ebf\uff1b<\/p>\n \uff08e\uff09\u5668\u4ef6M1\u7684\u5782\u76f4\u548c\u5e73\u884c\u4e34\u754c\u78c1\u573a\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n \u56fe<\/b><\/strong>4<\/b><\/strong>\u00a0\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u5728\u4e0d\u540c\u78c1\u573a\u4e0b\u7684\u6e29\u5ea6\u5bc6\u5ea6\u76f8\u56fe<\/b><\/strong><\/p>\n \uff08a-c\uff09\u5206\u522b\u5728B\u22a5<\/sub>= 0\uff0cB\u22a5<\/sub>= 0.4T\u548cBperp<\/sub>\u00a0= 8T\u4e0b\u6d4b\u91cf\u7684\u4e0d\u540c\u5bc6\u5ea6\u7684\u5668\u4ef6M1\u7684Rxx<\/sub>-T\u66f2\u7ebf\uff1b<\/p>\n \uff08d-f\uff09\uff08a-c\uff09\u4e2d\u5bf9\u5e94\u4e8e\u78c1\u573a\u7684\u793a\u610f\u6027\u76f8\u56fe\u3002<\/p>\n \u56fe<\/b><\/strong>5<\/b><\/strong>\u00a0\u5728\u9ad8\u573a\u4e0b\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u7684\u91cf\u5b50\u632f\u8361<\/b><\/strong><\/p>\n \uff08a\uff09\u5668\u4ef6M2\u7684\u78c1\u963bRxx<\/sub>\u548cB\u22a5<\/sub>\u7684\u5173\u7cfb\uff1b<\/p>\n \uff08b\uff09\uff08a\uff09\u4e2d\u7531A\uff0cB\u548cC\u6807\u8bb0\u7684\u7535\u8377\u5bc6\u5ea6\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u91cf\u5b50\u632f\u8361\u8ff9\u7ebf\uff1b<\/p>\n \uff08c\uff09\uff08b\uff09\u4e2d\u6240\u793a\u7684\u632f\u8361\u7684\u5f52\u4e00\u5316\u632f\u5e45\u7684Lifshitz-Kosevich\u66f2\u7ebf\uff1b<\/p>\n \uff08d\uff0ce\uff09\u5206\u522b\u662f\u4f5c\u4e3a\u7535\u8377\u5bc6\u5ea6n\u7684\u51fd\u6570\u63d0\u53d6\u7684SdH\u632f\u8361\u9891\u7387\u548c\u6709\u6548\u8d28\u91cf\u3002<\/p>\n \u56fe<\/b><\/strong>6<\/b><\/strong>\u00a0\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u5728\u5f3a\u8026\u5408\u6781\u9650\u4e2d\u7684\u8d85\u5bfc\u6027<\/b><\/strong><\/p>\n \u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u975e\u5e38\u89c4\u8d85\u5bfc\u7684\u5b9e\u73b0\u5c06\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u5efa\u7acb\u4e3a\u4e00\u4e2a\u7528\u4e8e\u7814\u7a76\u76f8\u5173\u7535\u5b50\u7269\u7406\u7684\u76f8\u5bf9\u7b80\u5355\u7684\uff0c\u53ef\u8bbf\u95ee\u548c\u9ad8\u5ea6\u53ef\u8c03\u7684\u5e73\u53f0\u3002\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u7684\u76f8\u4e92\u4f5c\u7528\u53ef\u4ee5\u901a\u8fc7\u626d\u66f2\u89d2\u5ea6\u548c\u901a\u8fc7\u5dee\u5206\u95e8\u63a7\u65bd\u52a0\u5782\u76f4\u7535\u573a\u6765\u8fdb\u4e00\u6b65\u5fae\u8c03\u3002\u6b64\u5916\uff0c\u901a\u8fc7\u5411\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u65bd\u52a0\u538b\u529b\u4ee5\u589e\u52a0\u5c42\u95f4\u6742\u5316\uff0c\u6216\u901a\u8fc7\u8026\u5408\u4e0d\u540c\u7684\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u7ed3\u6784\u4ee5\u5f15\u8d77\u5782\u76f4\u65b9\u5411\u4e0a\u7684Jospehson\u8026\u5408\uff0cTc<\/sub>\u53ef\u4ee5\u8fdb\u4e00\u6b65\u589e\u5f3a\u3002\u7c7b\u4f3c\u7684\u9b54\u89d2\u8d85\u6676\u683c\u548c\u5e73\u5e26\u7535\u5b50\u7ed3\u6784\u4e5f\u53ef\u4ee5\u7528\u5176\u4ed6\u4e8c\u7ef4\u6750\u6599\u6216\u6676\u683c\u6765\u5b9e\u73b0\uff0c\u4ee5\u7814\u7a76\u5177\u6709\u4e0d\u540c\u5c5e\u6027\u7684\u5f3a\u76f8\u5173\u7cfb\u7edf\u3002<\/p>\n \u6587\u732e\u94fe\u63a5\uff1a<\/b><\/strong>Unconventional superconductivity in magic-angle graphene superlattices<\/u><\/a>\uff08Nature,\u00a02018, DOI: 10.1038\/nature26160\uff09<\/p>\n Nature<\/b><\/strong>\uff1a\u9b54\u89d2\u77f3\u58a8\u70ef\u8d85\u6676\u683c\u4e2d\u7684\u975e\u5e38\u89c4\u8d85\u5bfc\u6027<\/b><\/strong><\/p>\n \u3010\u5f15\u8a00\u3011<\/b><\/strong><\/p>\n \u7531\u4e24\u7247\u77f3\u58a8\u70ef\u5236\u6210\u7684\u7b80\u5355\u7cfb\u7edf\u5df2\u7ecf\u4ece\u7edd\u7f18\u4f53\u8f6c\u53d8\u4e3a\u8d85\u5bfc\u4f53\u3002\u8fd9\u4e00\u53d1\u73b0\u6709\u671b\u5f00\u542f\u5bf9\u8d85\u5bfc\u7535\u6027\u7684\u975e\u4f20\u7edf\u5f62\u5f0f\u7684\u7814\u7a76\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/b><\/strong><\/p>\n \u8fd1\u65e5\uff0c\u7f8e\u56fd\u5bbe\u5915\u6cd5\u5c3c\u4e9a\u5927\u5b66<\/b><\/strong>Eugene J. Mele<\/b><\/strong>\u6559\u6388\u8bc4\u8ff0\u4e86<\/b><\/strong>\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u66f9\u539f\u535a\u58eb<\/b><\/strong>\u7684\u6210\u679c\uff0c\u8bc4\u8bf4\u4ed6\u4eec\u5236\u5907\u4e86\u65cb\u8f6c\u626d\u66f2\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\uff0c\u901a\u8fc7\u7535\u5b50\u4e4b\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u6765\u63a7\u5236\u6574\u4e2a\u4f53\u7cfb\u7684\u7535\u5b50\u6001\u3002\u65cb\u8f6c\u4ea7\u751f\u7684\u4f4d\u9519\u4f7f\u77f3\u58a8\u70ef\u5c42\u4e2d\u7684\u7535\u5b50\u80fd\u5e26\u7ed3\u6784\u4e0d\u518d\u5bf9\u9f50\uff0c\u5355\u80de\u53d8\u5927\u3002\u7814\u7a76\u53d1\u73b0\uff0c\u5806\u53e0\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\uff0c\u7535\u5b66\u884c\u4e3a\u5bf9\u539f\u5b50\u6392\u5217\u975e\u5e38\u654f\u611f\uff0c\u5f71\u54cd\u5c42\u95f4\u7535\u5b50\u79fb\u52a8\u3002\u76f8\u5173\u8bc4\u8ff0\u4ee5\u9898\u4e3a\u201cNovel electronic states seen in graphene<\/b><\/strong>\u201d\u53d1\u8868\u5728\u4e86Nature<\/b><\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n \u56fe<\/b><\/strong>1 \u4e0d\u540c\u89d2\u5ea6\u626d\u66f2\u7684\u53cc\u5c42\u77f3\u58a8\u70ef<\/b><\/strong><\/p>\n \uff08a\uff09\u5f53\u77f3\u58a8\u70ef\u53cc\u5c42\u88ab\u626d\u66f2\u4f7f\u5f97\u9876\u5c42\u7247\u6750\u4e0e\u4e0b\u5c42\u7247\u6750\u4e0d\u5bf9\u9f50\u65f6\uff0c\u5355\u4f4d\u6676\u80de\u53d8\u5927\uff1b\u00a0<\/p>\n \uff08b\uff09\u5bf9\u4e8e\u5c0f\u65cb\u8f6c\u89d2\u5ea6\uff0c\u4ea7\u751f\u201c\u83ab\u5c14\u6761\u7eb9\u201d\u56fe\u6848\uff0c\u5176\u4e2d\u5c40\u90e8\u5806\u53e0\u5e03\u7f6e\u5468\u671f\u6027\u53d8\u5316\u3002\u00a0<\/p>\n \u3010\u5c0f\u7ed3<\/b><\/strong>\u3011<\/p>\n \u8fd9\u4e00\u53d1\u73b0\u8868\u660e\uff0c\u626d\u66f2\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\u53ef\u4f5c\u4e3a\u4e00\u4e2a\u7075\u6d3b\u548c\u53ef\u8c03\u8c10\u7684\u5e73\u53f0\uff0c\u5176\u4e2d\u76f8\u5173\u7684\u7535\u5b50\u73b0\u8c61\u53ef\u4ee5\u5f88\u5bb9\u6613\u89c2\u5bdf\u5230\uff0c\u751a\u81f3\u53ef\u80fd\u88ab\u8bbe\u8ba1\u548c\u5f00\u53d1\u3002\u8fd9\u9879\u5de5\u4f5c\u4e3a\u7814\u7a76\u975e\u5e38\u89c4\u8d85\u5bfc\u6027\u63d0\u4f9b\u4e86\u4e00\u79cd\u6709\u524d\u9014\u7684\u65b9\u6cd5\u3002<\/p>\n \u6587\u732e\u94fe\u63a5\uff1a<\/b><\/strong>Novel electronic states seen in graphene<\/u><\/a>\uff08Nature,\u00a02018, DOI: 10.1038\/d41586-018-02660-4\uff09<\/p>\n \u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u5b66\u672f\u7ec4\u6728\u6587\u97ec<\/b><\/strong>\u7ffb\u8bd1\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\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<\/b><\/u><\/strong><\/a>\u3002\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\u7bb1tougao@cailiaoren.com\u3002<\/p>\n<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
<\/p>\n
\u3010\u5c0f\u7ed3<\/b><\/strong>\u3011<\/p>\n
<\/p>\n