{"id":230901,"date":"2021-12-16T08:46:30","date_gmt":"2021-12-16T00:46:30","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=230901"},"modified":"2021-12-16T09:15:42","modified_gmt":"2021-12-16T01:15:42","slug":"%e8%a7%a3%e8%af%bb-%e9%ad%94%e8%a7%92%e6%89%ad%e6%9b%b2%e5%8f%8c%e5%b1%82%e7%9f%b3%e5%a2%a8%e7%83%af%e4%b8%ad%e7%9a%84%e5%88%86%e6%95%b0%e9%99%88%e7%bb%9d%e7%bc%98%e4%bd%93","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=230901","title":{"rendered":"\u9b54\u89d2\u77f3\u58a8\u70ef\u53c8\u53c8\u53c8\u53d1Nature"},"content":{"rendered":"

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

\u5206\u6570\u9648\u7edd\u7f18\u4f53(FCI)\u662f\u5206\u6570\u91cf\u5b50\u970d\u5c14\u6001\u7684\u6676\u683c\u7c7b\u4f3c\u7269\uff0c\u53ef\u4ee5\u4e3a\u64cd\u7eb5\u975e\u963f\u8d1d\u5c14\u6fc0\u53d1(non-Abelian excitations)\u63d0\u4f9b\u65b0\u7684\u9014\u5f84\u3002\u65e9\u671f\u7684\u7406\u8bba\u7814\u7a76\u9884\u6d4b\u4e86\u5b83\u4eec\u5b58\u5728\u4e8e\u5177\u6709\u5e73\u5766\u9648(Chern)\u5e26\u7684\u7cfb\u7edf\u4e2d\uff0c\u5e76\u5f3a\u8c03\u4e86\u7279\u5b9a\u91cf\u5b50\u51e0\u4f55\u7684\u5173\u952e\u4f5c\u7528\u3002\u7136\u800c\uff0cFCI\u72b6\u6001\u4ec5\u5728\u4e0e\u516d\u65b9\u6c2e\u5316\u787c(hBN)\u6392\u5217\u7684\u4f2f\u7eb3\u5c14(Bernal)\u5806\u53e0\u53cc\u5c42\u77f3\u58a8\u70ef(BLG)\u4e2d\u89c2\u5bdf\u5230\uff0c\u5176\u4e2dChern\u5e26\u7684\u5b58\u5728\u662f\u7531\u4e00\u4e2a\u975e\u5e38\u5927\u7684\u78c1\u573a\u9020\u6210\u7684\uff0c\u65e0\u6cd5\u5728\u96f6\u573a\u5b9e\u73b0FCI\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u9b54\u89d2\u626d\u66f2BLG\u5728\u96f6\u78c1\u573a\u4e0b\u652f\u6301\u5e73\u5766\u7684Chern\u5e26\uff0c\u56e0\u6b64\u4e3a\u7a33\u5b9a\u96f6\u573a FCI \u63d0\u4f9b\u4e86\u4e00\u6761\u6709\u524d\u9014\u7684\u9014\u5f84\u3002<\/p>\n

\u4eca\u65e5\uff0c\u7f8e\u56fd\u54c8\u4f5b\u5927\u5b66Yonglong Xie\u4e00\u4f5c\u52a0\u901a\u8baf\uff0c\u4e0e\u7f8e\u56fd\u9ebb\u7701\u7406\u5de5\u5b66\u9662Pablo Jarillo-Herrero\u3001\u7f8e\u56fd\u54c8\u4f5b\u5927\u5b66Amir Yacoby\u8bfe\u9898\u7ec4\u5408\u4f5c\uff0c\u62a5\u544a\u4e86\u901a\u8fc7\u9ad8\u5206\u8fa8\u7387\u5c40\u90e8\u538b\u7f29\u7387\u6d4b\u91cf\u5b9e\u73b0\u7684\u9b54\u89d2\u626d\u66f2BLG\u5728\u4f4e\u78c1\u573a\u4e0b\u89c2\u5bdf\u5230\u7684\u516b\u4e2aFCI\u72b6\u6001<\/b><\/strong>\u3002\u8fd9\u4e9b\u72b6\u6001\u4e2d\u7684\u7b2c\u4e00\u4e2a\u57285 T\u65f6\u51fa\u73b0\uff0c\u5b83\u4eec\u7684\u51fa\u73b0\u4f34\u968f\u7740\u9644\u8fd1\u62d3\u6251\u5e73\u51e1\u7535\u8377\u5bc6\u5ea6\u6ce2\u6001\u7684\u540c\u65f6\u6d88\u5931\u3002\u672c\u5de5\u4f5c\u8bc1\u660e\uff0c\u4e0eBLG\/hBN\u5e73\u53f0\u4e0d\u540c\uff0c\u5f31\u78c1\u573a\u7684\u4e3b\u8981\u4f5c\u7528\u53ea\u662f\u91cd\u65b0\u5206\u914d\u672c\u5f81Chern\u5e26\u7684\u8d1d\u91cc(Berry)\u66f2\u7387\uff0c\u4ece\u800c\u5b9e\u73b0\u6709\u5229\u4e8eFCIs\u4ea7\u751f\u7684\u91cf\u5b50\u51e0\u4f55\u3002\u672c\u5de5\u4f5c\u7684\u7814\u7a76\u7ed3\u679c\u5f3a\u70c8\u8868\u660eFCI\u53ef\u4ee5\u5728\u96f6\u78c1\u573a\u4e0b\u5b9e\u73b0\uff0c\u5e76\u4e3a\u63a2\u7d22\u548c\u64cd\u7eb5\u5e73\u5766\u83ab\u5c14Chern\u5e26\u4e2d\u7684\u4efb\u610f\u5b50\u6fc0\u53d1\u94fa\u5e73\u9053\u8def\u3002<\/b><\/strong>\u76f8\u5173\u8bba\u6587\u4ee5\u9898\u4e3a\u201cFractional Chern insulators in magic-angle twisted bilayer graphene\u201d\u53d1\u8868\u5728Nature\u4e0a\u3002<\/p>\n

\"\"\u00a0<\/p>\n

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

\u56fe1. MATBG\u4e2d\u5177\u6709\u5206\u6570\u91cf\u5b50\u6570\u7684\u4e0d\u53ef\u538b\u7f29\u6001<\/b><\/strong><\/p>\n

\"\"\u00a0<\/p>\n

\u56fe<\/b><\/strong>2<\/b><\/strong>. \u5bc6\u5ea6\u6ce2\u5728\u4f4e\u78c1\u573a\u4e0b\u7684\u72b6\u6001\u4e3a2.5\u2009< \u03bd\u2009< 4<\/b><\/strong><\/p>\n

\"\"\u00a0<\/p>\n

\u56fe<\/b><\/strong>3<\/b><\/strong>. \u5f31\u78c1\u573a\u4e2d\u7684FCI<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u56fe<\/b><\/strong>4<\/b><\/strong>. \u66f4\u9ad8\u78c1\u573a\u4e0b\u7684\u989d\u5916FCI<\/b><\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a\u201cFractional Chern insulators in magic-angle twisted bilayer graphene.\u201d Nature 600, 439\u2013443 (2021). https:\/\/doi.org\/10.1038\/s41586-021-04002-3<\/p>\n

 <\/p>\n

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

\u3010\u5f15\u8a00\u3011 \u5206\u6570\u9648\u7edd\u7f18\u4f53(FCI)\u662f\u5206\u6570\u91cf\u5b50\u970d\u5c14\u6001\u7684\u6676\u683c\u7c7b\u4f3c\u7269\uff0c\u53ef\u4ee5\u4e3a\u64cd\u7eb5\u975e\u963f\u8d1d\u5c14\u6fc0\u53d1(non-Abelian excitations)\u63d0\u4f9b\u65b0\u7684\u9014\u5f84\u3002\u65e9\u671f\u7684\u7406\u8bba\u7814…<\/p>\n","protected":false},"author":14360,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-230901","post","type-post","status-publish","format-standard","hentry","category-keji"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/230901"}],"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\/14360"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=230901"}],"version-history":[{"count":2,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/230901\/revisions"}],"predecessor-version":[{"id":230908,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/230901\/revisions\/230908"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=230901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=230901"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=230901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}