{"id":245439,"date":"2023-01-08T06:00:14","date_gmt":"2023-01-07T22:00:14","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=245439"},"modified":"2023-01-05T16:24:44","modified_gmt":"2023-01-05T08:24:44","slug":"nat-mater%ef%bc%9a%e6%89%ad%e6%9b%b2%e4%b8%89%e5%b1%82%e7%9f%b3%e5%a2%a8%e7%83%af%e4%b8%ad%e5%bc%ba%e5%85%b3%e8%81%94%e7%9b%b8%e7%9a%84%e7%8b%84%e6%8b%89%e5%85%8b%e8%b0%b1","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=245439","title":{"rendered":"Nat. Mater\uff1a\u626d\u66f2\u4e09\u5c42\u77f3\u58a8\u70ef\u4e2d\u5f3a\u5173\u8054\u76f8\u7684\u72c4\u62c9\u514b\u8c31"},"content":{"rendered":"<p style=\"text-align: center;\">\u3010\u5bfc\u8bfb\u3011<\/p>\n<p>\u91cf\u5b50\u76f8\u4f4d\u7684\u57fa\u672c\u7279\u5f81\u901a\u5e38\u4ee5\u95f4\u9699\u5f00\u53e3\u7684\u5f62\u5f0f\u51fa\u73b0\uff0c\u8fd9\u610f\u5473\u7740\u80fd\u5e26\u62d3\u6251\u3001\u7535\u5b50\u5173\u8054\u548c\u57fa\u672c\u6fc0\u53d1\u7684\u76f8\u53d8\u3002\u5728\u5e73\u5e26moir\u00e9\u7cfb\u7edf\u4e2d\uff0c\u6700\u8fd1\u51fa\u73b0\u4e86\u4e00\u4e2a\u7814\u7a76\u5f3a\u5173\u8054\u7535\u5b50\u7684\u7a33\u5b9a\u548c\u53ef\u8c03\u7684\u5e73\u53f0\uff0c\u53d1\u73b0\u4e86\u5173\u8054\u7edd\u7f18\u4f53\u8d85\u5bfc\u548c\u62d3\u6251\u9648\u7edd\u7f18\u4f53\u7684\u5947\u5f02\u5e26\u9699\u91cf\u5b50\u6001\u3002\u7279\u522b\u662f\uff0c\u6700\u8fd1\u5b9e\u73b0\u7684\u9b54\u89d2\u03b8\u22481.5\u00b0(MATTG)\u7684\u955c\u50cf\u5bf9\u79f0\u626d\u66f2\u4e09\u5c42\u77f3\u58a8\u70ef\u7cfb\u7edf\u5df2\u7ecf\u53d1\u5c55\u6210\u4e3a\u4e00\u4e2a\u6709\u8da3\u7684\u65b0\u5e73\u53f0\u3002\u7136\u800c\uff0c\u5b83\u7684\u80fd\u8c31\u5305\u542b\u4e00\u4e2a\u5171\u5b58\u7684moir\u00e9\u5e73\u5e26\u548c\u4e00\u4e2a\u9661\u5ced\u7684\u72c4\u62c9\u514b\u9525\uff0c\u8fd9\u4f7f\u5f97\u68c0\u6d4b\u76f8\u5173\u8bf1\u5bfc\u7684\u7edd\u7f18\u72b6\u6001\u975e\u5e38\u56f0\u96be\uff0c\u56e0\u4e3a\u901a\u8fc7\u72c4\u62c9\u514b\u9525\u7684\u591a\u6ce2\u6bb5\u4f20\u8f93\u63a9\u76d6\u4e86\u8fd9\u4e9b\u72b6\u6001\u3002\u660e\u786e\u68c0\u6d4b\u548c\u91cf\u5316MATTG\u5e73\u5e26\u4e2d\u7684\u975e\u5e73\u51e1\u5e26\u9699\u6001\u9700\u8981\u4e00\u79cd\u65b0\u6280\u672f\uff0c\u53ef\u4ee5\u9009\u62e9\u6027\u5730\u89e3\u5f00\u7f20\u7ed5\u5e26\u4e2d\u7684\u7535\u5b50\u3002<\/p>\n<p style=\"text-align: center;\">\u3010\u6210\u679c\u63a0\u5f71\u3011<\/p>\n<p>\u8fd1\u65e5\uff0c\u5df4\u585e\u7f57\u90a3\u79d1\u5b66\u6280\u672f\u5b66\u9662Dmitri K. Efetov\u6559\u6388\u5c55\u793a\u4e86\u4e00\u79cd\u5149\u8c31\u6280\u672f\uff0c\u8be5\u6280\u672f\u901a\u8fc7\u9a71\u52a8\u72c4\u62c9\u514b\u9525-\u6717\u9053\u80fd\u7ea7\u548c\u5e73\u5e26\u80fd\u9699\u4e4b\u95f4\u7684\u5e26\u4ea4\u53c9\u6765\u5206\u79bb\u4ea4\u7ec7\u5e26\uff0c\u5e76\u91cf\u5316MATTG\u4e2d\u5173\u8054\u6001\u7684\u80fd\u9699\u548c\u9648\u6570C\u3002\u63ed\u793a\u4e86\u5728\u03bd = 2\u548c3\u7684\u6574\u6570\u83ab\u5c14\u5355\u5143\u586b\u5145\u4e0bC = 0\u7684\u786c\u5173\u8054\u80fd\u9699\uff0c\u5e76\u63ed\u793a\u4e86\u5728\u5206\u6570\u586b\u5145\u03bd = 5\/3\u548c11\/3\u4e0b\u6e90\u81ea\u8303\u970d\u592b\u5947\u70b9\u7684\u7535\u8377\u5bc6\u5ea6\u6ce2\u6001\u3002\u6b64\u5916\uff0c\u8bc1\u660e\u4e86\u7535\u8377\u4e2d\u6027\u548c\u03bd = 2\u65f6\u4f4d\u79fb\u573a\u9a71\u52a8\u7684\u4e00\u7ea7\u76f8\u53d8\uff0c\u8fd9\u4e0e\u7406\u8bba\u4e0a\u7684\u5f3a\u8026\u5408\u5206\u6790\u4e00\u81f4\uff0c\u610f\u5473\u7740C2T\u5bf9\u79f0\u6027\u7834\u7f3a\u3002\u603b\u7684\u6765\u8bf4\uff0c\u8fd9\u4e9b\u7279\u6027\u5efa\u7acb\u4e86MATTG\u7684\u4e0d\u540c\u7684\u7535\u53ef\u8c03\u8c10\u76f8\u56fe\uff0c\u5e76\u4e3a\u7814\u7a76\u5305\u542b\u9661\u5e26\u548c\u5e73\u5e26\u7684\u5176\u4ed6\u76f8\u5173\u7cfb\u7edf\u63d0\u4f9b\u4e86\u9014\u5f84\u3002\u76f8\u5173\u6210\u679c\u4ee5\u201c<strong>Dirac spectroscopy of strongly correlated phases in twisted trilayer graphene<\/strong>\u201d\u53d1\u8868\u5728<strong><em>Nature Materials<\/em><\/strong>\u4e0a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-245440\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72471-2.png\" alt=\"\" width=\"554\" height=\"223\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72471-2.png 554w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72471-2-300x121.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/p>\n<p style=\"text-align: center;\"><strong>\u3010<\/strong>\u6838\u5fc3\u521b\u65b0\u70b9<strong>\u3011<\/strong><\/p>\n<p>\u672c\u7814\u7a76\u5efa\u7acb\u4e86\u9b54\u89d2\u626d\u8f6c\u4e09\u5c42\u77f3\u58a8\u70efMATTG\u7684\u5404\u79cd\u7535\u8c03\u8c10\u76f8\u56fe\uff0c\u4e3a\u7814\u7a76\u5176\u4ed6\u76f8\u5173\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u6761\u65b0\u9014\u5f84<\/p>\n<p style=\"text-align: center;\">\u3010\u6570\u636e\u6982\u51b5\u3011<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-245441\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72472-1.png\" alt=\"\" width=\"1269\" height=\"921\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72472-1.png 1269w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72472-1-300x218.png 300w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72472-1-768x557.png 768w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72472-1-1024x743.png 1024w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/><\/p>\n<p>\u56fe1:MATTG\u5e73\u5e26\u7684\u5e26\u4ea4\u53c9\u548c\u96f6\u9648\u6570\u3002\u00a92022 Springer Nature<\/p>\n<p>a\u3001 \u53cc\u95e8\u63a7MATTG\u8bbe\u5907\u793a\u610f\u56fe\u3002<\/p>\n<p>b\u3001 D = 0 V nm<sup>\u22121<\/sup>\u5904(\u5de6)\u548cD = 0.5 V nm<sup>\u22121<\/sup>\u5904(\u53f3)\u7684\u5355\u7c92\u5b50\u5e26\u7ed3\u6784\u3002<\/p>\n<p>c\u3001 D-LLs\u548cmoir\u00e9\u5e73\u5e26\u4e4b\u95f4\u7684\u5e26\u4ea4\u53c9\u793a\u610f\u56fe(\u5de6)\uff0c\u6bcf\u4e2amoir\u00e9\u5355\u4f4d\u6676\u80de\u7684\u6574\u6570\u7535\u5b50\u586b\u5145\u03bd = i (i = \u2009\u00b11, \u00b12, \u00b13)\u3002<\/p>\n<p>d\u3001 e\uff0c\u7531\u96f6\u4f4d\u79fb\u573a\u4e0b\u7684\u7eb5\u5411\u7535\u963bR<sub>xx<\/sub>\uff08d\uff09\u548c\u6a2a\u5411\u970d\u5c14\u7535\u963bR<sub>xy<\/sub>\uff08e\uff09\u6240\u793a\u7684\u6717\u9053\u98ce\u6247\u56fe\u3002<\/p>\n<p>f\uff0c\u4e0d\u540c\u78c1\u573aB\u4e0bR<sub>xy<\/sub>\u7684\u7ebf\u5207\u5272\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-245442\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72473-2.png\" alt=\"\" width=\"1269\" height=\"479\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72473-2.png 1269w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72473-2-300x113.png 300w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72473-2-768x290.png 768w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72473-2-1024x387.png 1024w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/><\/p>\n<p>\u56fe2:\u5206\u6570\u586b\u5145\u6001\u03bd = 5\/3\u548c11\/3\u65f6\u7684\u7535\u8377\u5bc6\u5ea6\u6ce2\u3002\u00a92022 Springer Nature<\/p>\n<p>a\uff0c\u901a\u8fc7Hartree-Fock\u6a21\u62df\uff0c\u5f97\u5230\u4e86\u03bd = 2\u5728moir\u00e9\u5e03\u91cc\u6e0a\u5e26\u4e2d\u4ef7\u5e26\u7684\u76f8\u4e92\u4f5c\u7528\u5e26\u7ed3\u6784\u3002<\/p>\n<p>b\uff0c\u4ece<em>T <\/em>= 0.1 K\u5230<em>T <\/em>= 10 K\uff0c\u5728b = 0.5 T\u7684\u4e0d\u540c\u6e29\u5ea6\u4e0b\uff0c\u970d\u5c14\u7535\u963bR<sub>xy<\/sub>\u4e0e\u7535\u8377\u586b\u5145\u7684\u5173\u7cfb\u3002<\/p>\n<p>c\uff0c\u7531\u7eb5\u5411\u7535\u963bR<sub>xx<\/sub>(\u4e0a)\u548cR<sub>xy<\/sub>\u7ebf\u8ff9(\u4e0b)\u663e\u793a\u7684\u03bd = 4\u9644\u8fd1\u7684\u6717\u9053\u6247\u56fe\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-245443\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72474-1.png\" alt=\"\" width=\"1269\" height=\"665\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72474-1.png 1269w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72474-1-300x157.png 300w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72474-1-768x402.png 768w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72474-1-1024x537.png 1024w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/><\/p>\n<p>\u56fe3\uff1a\u5728v = 2\u65f6\u63d0\u53d6\u4ea4\u4e92\u4f5c\u7528\u9a71\u52a8\u7684\u95f4\u9699\u3002\u00a92022 Springer Nature<\/p>\n<p>a\uff0c\u4f4e\u78c1\u573a\u4e0b\u7684\u91cf\u5b50\u632f\u8361\uff0c\u7eb5\u5411\u7535\u963bR<sub>xx<\/sub>\u548c\u6a2a\u5411\u970d\u5c14\u7535\u963bR<sub>xy<\/sub>\u5728\u4e0d\u540c\u4f4d\u79fb\u573a\u4e0b\u7684\u8868\u73b0\u3002<\/p>\n<p>b\uff0c\u901a\u8fc7\u8c03\u8c10\u8f7d\u6d41\u5b50\u5bc6\u5ea6\u548c\u5782\u76f4\u78c1\u573a\u6d4b\u91cf\u95f4\u9699\u7684\u8bf4\u660e\u6027\u539f\u7406\u56fe\uff0c\u5176\u4e2dDOS\u4e3a\u6001\u5bc6\u5ea6\u3002<\/p>\n<p>c\uff0c\u63d0\u53d6\u4e86\u76f8\u5bf9\u4e8e\u7b2c0\u4e2aD-LL\u548c\u76f8\u5173\u95f4\u9699\u0394<sup>f <\/sup>(\u03bd = 2)\u7684\u5e26\u8fb9\u5316\u5b66\u52bf\u4f5c\u4e3a\u5e73\u5e26\u4f4d\u79fb\u573a\u7684\u51fd\u6570\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-245444\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72475-2.png\" alt=\"\" width=\"1269\" height=\"1129\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72475-2.png 1269w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72475-2-300x267.png 300w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72475-2-768x683.png 768w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2023\/01\/\u56fe\u72475-2-1024x911.png 1024w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/><\/p>\n<p>\u56fe4:\u4f4d\u79fb\u573a\u8bf1\u5bfc\u76f8\u53d8\u3002\u00a92022 Springer Nature<\/p>\n<p>a,b\uff0c\u6a2a\u5411\u970d\u5c14\u7535\u963bR<sub>xy<\/sub> (a)\u548c\u7eb5\u5411\u7535\u963b\u7387<em>\u03c1<\/em> (b)\u4e0e\u03bd\u4e0eD\u7684\u989c\u8272\u56fe\u3002<\/p>\n<p>c\uff0c <em>\u03c1<\/em>\u4e0eD\u5728\u03bd = 2\u586b\u5145\u65f6\uff0c\u663e\u793a\u4e86\u4ece\u91d1\u5c5e\u6001\u5230\u95f4\u9699\u6001\u7684\u8f6c\u53d8\u3002<\/p>\n<p>d\uff0c\u63cf\u8ff0\u4e34\u754c\u4f4d\u79fb\u573aD<sub>c1<\/sub>, D<sub>c2<\/sub>, D<sub>c3<\/sub>\u7684\u793a\u610f\u56fe\uff0c\u5b83\u6807\u5fd7\u7740\u4e0d\u540c\u591a\u4f53\u72b6\u6001\u4e4b\u95f4\u7684\u8fc7\u6e21\u3002<\/p>\n<p>e\uff0c\u6570\u503cHartree-Fock\u6a21\u62df\u7684\u7ade\u4e89\u57fa\u6001\u7684\u534a\u91d1\u5c5e(SM)\uff0c\u8c37\u6781\u5316(VP)\u548c\u514b\u96f7\u9ed8\u8c37\u95f4\u76f8\u5e72(KIVC)\u4e0e\u8c37\u970d\u5c14(VH)\u72b6\u6001\u76f8\u6bd4\u7684\u80fd\u91cf\u5dee\u3002<\/p>\n<p style=\"text-align: center;\">\u3010\u6210\u679c\u542f\u793a\u3011<\/p>\n<p>\u603b\u4e4b\uff0c\u672c\u7814\u7a76\u5728MATTG\u4e2d\u63d0\u51fa\u4e86\u4e00\u79cd\u72c4\u62c9\u514b\u5149\u8c31\uff0c\u7528\u4e8e\u63ed\u793a\u548c\u91cf\u5316\u591a\u4f53\u7535\u5b50\u72b6\u6001\uff0c\u7279\u522b\u662f\u5728\u6574\u6570\u6216\u5206\u6570\u586b\u5145\u5904\u5177\u6709\u96f6\u9648\u6570\u7684\u76f8\u5173\u72b6\u6001\u3002\u8fd9\u79cd\u5149\u8c31\u5b66\u8fd8\u63ed\u793a\u4e86\u4f4d\u79fb\u573a\u4e2d\u5947\u5f02\u76f8\u53d8\u548c\u590d\u6742\u76f8\u5173\u5e26\u7ed3\u6784\u7684\u6f14\u53d8\u3002\u8be5\u5de5\u4f5c\u8fd8\u6709\u52a9\u4e8e\u5728\u76f8\u5173\u7edd\u7f18\u4f53\u548c\u9644\u8fd1\u7684\u975e\u5e38\u89c4\u8d85\u5bfc\u4f53\u4e4b\u95f4\u67b6\u8d77\u6865\u6881\uff0c\u5e76\u4e3a\u7814\u7a76\u5176\u4ed6\u5177\u6709\u9661\u5e26\u548c\u5e73\u5e26\u7684\u626d\u66f2\u591a\u5c42\u77f3\u58a8\u70ef\u4e2d\u7684\u76f8\u5173\u72b6\u6001\u63d0\u4f9b\u4e86\u9014\u5f84\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u53c2\u8003\u6587\u732e\uff1aShen, C., Ledwith, P.J., Watanabe, K. et al. Dirac spectroscopy of strongly correlated phases in twisted trilayer graphene. Nat. Mater. 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