{"id":240717,"date":"2022-08-05T07:22:25","date_gmt":"2022-08-04T23:22:25","guid":{"rendered":"\/\/m.iemloyee.com\/?p=240717"},"modified":"2022-08-04T16:22:42","modified_gmt":"2022-08-04T08:22:42","slug":"%e4%b8%ad%e7%a7%91%e9%99%a2%e5%ba%b7%e5%a5%88%e5%b0%94-nat-nanotechnol-%ef%bc%9a%e6%89%ad%e6%9b%b2wse2%e4%b8%ad%e7%9a%84%e5%8f%af%e8%b0%83%e8%b0%90%e5%8f%8c%e5%b1%82hubbard%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=240717","title":{"rendered":"\u4e2d\u79d1\u9662&\u5eb7\u5948\u5c14 Nat. Nanotechnol.\uff1a\u626d\u66f2WSe2\u4e2d\u7684\u53ef\u8c03\u8c10\u53cc\u5c42Hubbard\u6a21\u578b"},"content":{"rendered":"

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

\u5728\u8fc7\u6e21\u91d1\u5c5e\u4e8c\u786b\u5316\u7269\uff08transition metal dichalcogenide, TMD\uff09\u7684\u53cc\u5c42\u540c\u8d28\u8282\u4e2d\uff0c\u5c42\u95f4\u8026\u5408\u5f3a\u70c8\u4f9d\u8d56\u4e8e\u53cc\u5c42\u4e4b\u95f4\u7684\u626d\u8f6c\u89d2\u3002\u5728\u4f4d\u4e8e\u5e03\u91cc\u6e0a\u533a\uff08Brillouin zone\uff09K\u70b9\u548c-K\u70b9\u7684\u4ef7\u5e26\u8fb9\u7f18\u9644\u8fd1\u5177\u6709\u81ea\u65cb\u8c37\u9501\u5b9a\u7684\u7279\u6027\uff0c\u5404\u5355\u5c42\u80fd\u5e26\u81ea\u65cb\u6781\u5316\uff0c\u4e14\u81ea\u65cb\u5288\u88c2\u8f83\u5927\u3002\u5bf9\u4e8e\u63a5\u8fd10\u00b0\u9644\u8fd1\uff08\u6216AA\u5806\u53e0\uff09\u7684\u8f6c\u89d2\u53cc\u5c42\u540c\u8d28\u8282\uff0c\u5176\u5c42\u95f4\u80fd\u5e26\u7684\u6742\u5316\u8026\u5408\u662f\u5f3a\u70c8\u7684\u3002\u5bf9\u4e8e60\u00b0\u9644\u8fd1\uff08\u6216AB\u5806\u53e0\uff09\u7684\u8f6c\u89d2\u53cc\u5c42\u540c\u8d28\u8282\uff0c\u5c42\u95f4\u7684\u5355\u7c92\u5b50\u96a7\u7a7f\u662f\u81ea\u65cb\u7981\u6b62\u7684\u3002\u5728\u8be5\u9650\u5236\u4e0b\uff0c\u5c42\u7684\u81ea\u7531\u5ea6\u53ef\u4ee5\u88ab\u8ba4\u4e3a\u662f\u8d5d\u81ea\u65cb\uff0c\u4e0e\u771f\u5b9e\u81ea\u65cb\u4e00\u8d77\u5f62\u6210SU(4)\u5bf9\u79f0\u6027\u3002\u6700\u8fd1\u7684\u7406\u8bba\u7814\u7a76\u63d0\u51fa\u5728\u8f6c\u89d2\u7684TMD AB\u53cc\u5c42\u540c\u8d28\u8282\u4e2d\u6a21\u62dfSU(4) Hubbard\u6a21\u578b\uff0c\u53ef\u80fd\u4f1a\u4ea7\u751f\u624b\u6027\u81ea\u65cb\u6db2\u4f53\u548c\u6fc0\u5b50\u8d85\u56fa\u76f8\u3002\u7136\u800c\uff0c\u8be5\u6a21\u578b\u7684\u5b9e\u9a8c\u5b9e\u73b0\u4ee5\u53ca\u7535\u8377\u3001\u5c42\u548c\u81ea\u65cb\u76f8\u5173\u6027\u7684\u8868\u5f81\u4ecd\u7136\u96be\u4ee5\u6349\u6478\u3002<\/p>\n

\u3010\u6210\u679c\u63a0\u5f71\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u4e2d\u79d1\u9662\u7269\u7406\u7814\u7a76\u6240\u8bb8\u6768\u7279\u8058\u7814\u7a76\u5458\u3001\u7f8e\u56fd\u5eb7\u5948\u5c14\u5927\u5b66Jie Shan\u548cKin Fai Mak\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba<\/strong>\u62a5\u9053\u4e86\u8f6c\u89d2\u7684AB\u540c\u8d28\u53cc\u5c42WSe2\u4e2d\u7684\u7ade\u4e89\u7535\u5b50\u6001\uff0c\u5176\u5728\u7a7a\u7a74\u7684\u5f31\u5c42\u95f4\u8df3\u8dc3\u6781\u9650\u4e2d\u5b9e\u73b0\u4e86\u53cc\u5c42Hubbard\u6a21\u578b\u3002\u901a\u8fc7\u5782\u76f4\u7535\u573a\u5bf9\u7a7a\u7a74\u8fdb\u884c\u5c42\u6781\u5316\uff0c\u5728\u7a7a\u7a74\u5bc6\u5ea6\u4e3a\u03bd\u2009=\u20091\u65f6\uff08\u4ee5\u83ab\u5c14\u5bc6\u5ea6\u4e3a\u5355\u4f4d\uff09\uff0c\u4f5c\u8005\u89c2\u5bdf\u5230\u4e86\u4f53\u7cfb\u4ece\u6fc0\u5b50\u7edd\u7f18\u4f53\u5230\u7535\u8377\u8f6c\u79fb\u7edd\u7f18\u4f53\u7684\u8fc7\u6e21\uff1b\u5728\u03bd\u2009=\u20092\u65f6\u4ece\u987a\u78c1\u6027\u5230\u53cd\u94c1\u78c1\u6027\u7684\u8f6c\u53d8\uff0c\u4ee5\u53ca\u57281\u2009<\u2009\u03bd\u2009<\u20092\u65f6\u5c42\u9009\u62e9\u6027Mott\u7edd\u7f18\u4f53\u7684\u8bc1\u636e\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u7535\u8377\u548c\u81ea\u65cb\u4e0e\u5916\u90e8\u7535\u573a\u548c\u78c1\u573a\u7684\u72ec\u7279\u8026\u5408\u4e5f\u8868\u73b0\u51fa\u5de8\u5927\u7684\u78c1\u7535\u54cd\u5e94\u3002\u8be5\u7814\u7a76\u7ed3\u679c\u4e3a\u53cc\u5c42Hubbard\u6a21\u578b\u54c8\u5bc6\u987f\u91cf\u5efa\u7acb\u4e86\u4e00\u4e2a\u65b0\u7684\u56fa\u6001\u4eff\u771f\u5668\u3002\u7814\u7a76\u6210\u679c\u4ee5\u9898\u4e3a\u201cA tunable bilayer Hubbard model in twisted WSe2<\/sub><\/strong>\u201d\u53d1\u5e03\u5728\u56fd\u9645\u8457\u540d\u671f\u520aNature Nanotechnology<\/em>\u4e0a\u3002<\/p>\n

\"\"<\/p>\n

\u3010\u6838\u5fc3\u521b\u65b0\u3011<\/strong><\/p>\n

\u5229\u7528\u8f6c\u89d2\u7684AB\u540c\u8d28\u53cc\u5c42WSe2\u4e2d\u7684\u7ade\u4e89\u7535\u5b50\u6001\uff0c\u5b9e\u73b0\u4e86\u53cc\u5c42Hubbard\u6a21\u578b\uff0c\u5e76\u5229\u7528\u8be5\u4f53\u7cfb\u9a8c\u8bc1\u4e86\u4e0d\u540c\u7a7a\u7a74\u5bc6\u5ea6\u4e0b\u7684\u5173\u8054\u7535\u5b50\u7269\u6001\u7684\u81ea\u65cb\u4e0e\u8d5d\u81ea\u65cb\u8c03\u63a7\u3002<\/p>\n

\u3010\u6570\u636e\u6982\u89c8\u3011<\/strong><\/p>\n

\u56fe\u4e00\u3001\u8f6c\u89d2\u7684WSe2<\/sub> AB\u53cc\u5c42\u540c\u8d28\u8282<\/strong>\u00a92022 Springer Nature Limited
\n \"\"\uff08a\uff09\u626d\u66f2\u7684WSe2<\/sub>\u53cc\u5c42\u8868\u73b0\u51fa\u4e09\u79cd\u7c7b\u578b\u7684\u9ad8\u5bf9\u79f0\u5806\u53e0\u4f4d\u70b9MX\u3001MM\u548cXX\uff08M\u2009=\u2009W\u548cX\u2009=\u2009Se\uff09\uff0c\u626d\u8f6c\u89d2\u03b4\u2009\u2248\u200958\u00b0\uff1b<\/p>\n

\uff08b\uff09\u53cc\u95e8\u63a7WSe2<\/sub>\u83ab\u5c14\u53cc\u5c42\u5668\u4ef6\u7684\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08c\uff09WSe2<\/sub> AB\u540c\u8d28\u5c42\u9876\u90e8\u548c\u5e95\u90e8\u5c42\u4e2d-K\u548cK\u8c37\u7684\u7a7a\u7a74\u81ea\u65cb\u6392\u5217\uff1b<\/p>\n

\uff08d\uff09\u53cc\u5c42Hubbard\u6a21\u578b\u7684\u56fe\u793a\uff0c\u5176\u4e2d\u5c42\u5185\u8dc3\u8fc1\u80fd\u8fdc\u5c0f\u4e8e\u5c42\u5185\u548c\u5c42\u95f4\u5728\u4f4d\u6392\u65a5\u80fd\uff1b<\/p>\n

\uff08e\uff09\u5e26\u6709\u201c\u6fc0\u5b50\u63a2\u6d4b\u201d\u4f20\u611f\u5668\u7684\u5668\u4ef6\u7684\u53cd\u5c04\u5bf9\u6bd4\u5ea6\uff08\u0394R\/R0<\/sub>\uff09\u5149\u8c31\u4e0e\u9876\u6805\u7535\u538b\u7684\u5173\u7cfb\u3002<\/p>\n

\u56fe\u4e8c\u3001\u7535\u573a\u63a7\u5236\u5c42\u6781\u5316<\/strong>\u00a92022 Springer Nature Limited
\n \"\"\uff08a-b\uff09\u5728\u03bd\u2009=\u20091\u5904\u4f20\u611f\u56682s\u6fc0\u5b50\u7684\u53cd\u5c04\u5bf9\u6bd4\u5149\u8c31\u548c\u5728\u03bd\u2009=\u20092\u5904\u626d\u8f6c\u53cc\u5c42\u7684\u83ab\u5c14\u6fc0\u5b50\u7684\u7535\u573a\u4f9d\u8d56\u6027\uff1b<\/p>\n

\uff08c\uff09\u7531\u6fc0\u5b50\u4f20\u611f\u5668\u786e\u5b9a\u7684E<\/em>c<\/sub>\uff08\u7b26\u53f7\uff09\u7684\u63ba\u6742\u4f9d\u8d56\u6027\uff1b<\/p>\n

\uff08d\uff09\u57281.70\u2009eV\u5904\u626d\u66f2\u53cc\u5c42\u7684\u83ab\u5c14\u6fc0\u5b50\u5171\u632f\u9644\u8fd1\u5e73\u5747\u53cd\u5c04\u7387\u5bf9\u6bd4\u5ea6\u968f\u9762\u5916\u7535\u573a\u548c\u63ba\u6742\u6d53\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

\u56fe\u4e09\u3001\u78c1\u6027<\/strong>\u00a92022 Springer Nature Limited
\n \"\"\uff08a-c\uff09\u5728\u03bd\u2009=\u20091\u3001\u03bd\u2009=\u20091.6\u548c\u03bd\u2009=\u20092\u4e0b\uff0c\u78c1\u5706\u4e8c\u8272\u6027MCD\u968f\u78c1\u573a\u53d8\u5316\u7684\u6e29\u5ea6\u4f9d\u8d56\u5173\u7cfb\uff1b<\/p>\n

\uff08d-f\uff09\u5728\u03bd\u2009=\u20091\u3001\u03bd\u2009=\u20091.6\u548c\u03bd\u2009=\u20092\u4e0b\u7684\u9006\u78c1\u5316\u7387\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u3002<\/p>\n

\u56fe\u56db\u3001\u5c40\u90e8\u77e9\u548c\u53cd\u94c1\u78c1\u56e2\u7c07<\/strong>\u00a92022 Springer Nature Limited
\n \"\"\uff08a\uff09B\u2009=\u20092 \u2009T\u5904\uff0cMCD\u4f5c\u4e3a\u7535\u573a\u548c\u63ba\u6742\u5bc6\u5ea6\/\u586b\u5145\u56e0\u5b50\u7684\u51fd\u6570\uff1b<\/p>\n

\uff08b\uff09MCD\u7684\u63ba\u6742\u4f9d\u8d56\u6027\u66f2\u7ebf\uff0c\u5176\u4e2dP\u2009=\u20090\uff08\u84dd\u8272\uff09\u548cP\u2009=\u20091\uff08\u9ed1\u8272\uff09\u3002<\/p>\n

\u3010\u6210\u679c\u542f\u793a\u3011<\/strong><\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0c\u4f5c\u8005\u5728AB\u626d\u66f2\u7684WSe2<\/sub>\u4e2d\u63ed\u793a\u4e86\u4e30\u5bcc\u7684\u76f8\u5173\u7535\u5b50\u73b0\u8c61\u548c\u7ade\u4e89\u72b6\u6001\u3002\u4f5c\u8005\u671f\u671b\u5728\u5176\u4ed6\u626d\u66f2\u7684TMD AB\u540c\u8d28\u5c42\uff08\u626d\u66f2\u7684MoSe2<\/sub>\u6216MoTe2<\/sub>\u7b49\uff09\u3001\u5177\u6709\u5c0f\u5e26\u504f\u79fb\u7684\u89d2\u5ea6\u5bf9\u9f50\u7684\u5f02\u8d28\u53cc\u5c42\uff08MoSe2<\/sub>\/WS2<\/sub>\u7b49\uff09\u548c\u66f4\u590d\u6742\u7684\u591a\u5c42TMD\u5f02\u8d28\u7ed3\u4e2d\u5177\u6709\u7c7b\u4f3c\u7269\u7406\u6216\u66f4\u4e30\u5bcc\u7684\u73b0\u8c61\u3002\u8be5\u5e73\u53f0\u8fd8\u63d0\u4f9b\u4e86\u5b9e\u73b0\u5176\u4ed6\u65b0\u5947\u7269\u8d28\u72b6\u6001\u7684\u673a\u4f1a\uff0c\u4f8b\u5982\u91cf\u5b50\u81ea\u65cb\u6db2\u4f53\u548c\u6fc0\u5b50\u8d85\u56fa\u4f53\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aA tunable bilayer Hubbard model in twisted WSe2<\/sub><\/a><\/strong>. Nature Nanotechnology<\/em>, 2022<\/strong>, DOI: 10.1038\/s41565-022-01180-7.<\/p>\n

\u672c\u6587\u7531CQR\u7f16\u8bd1\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.<\/p>\n

\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu.<\/p>\n","protected":false},"excerpt":{"rendered":"

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