{"id":228095,"date":"2021-10-06T06:02:06","date_gmt":"2021-10-05T22:02:06","guid":{"rendered":"\/\/m.iemloyee.com\/?p=228095"},"modified":"2021-10-05T23:02:37","modified_gmt":"2021-10-05T15:02:37","slug":"%e6%97%a2%e6%98%af%e4%b8%80%e4%bd%9c%e5%8f%88%e5%bd%93%e9%80%9a%e8%ae%af%ef%bc%8c%e6%9c%80%e6%96%b0nature%e6%95%99%e4%bd%a0%e5%a6%82%e4%bd%95%e6%88%90%e5%83%8f%e7%94%b5%e5%ad%90%e6%99%b6%e6%a0%bc","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=228095","title":{"rendered":"\u65e2\u662f\u4e00\u4f5c\u53c8\u5f53\u901a\u8baf\uff0c\u6700\u65b0Nature\u6559\u4f60\u5982\u4f55\u6210\u50cf\u7535\u5b50\u6676\u683c"},"content":{"rendered":"

\u3010\u80cc\u666f\u4ecb\u7ecd\u3011<\/strong><\/p>\n

\u7ef4\u683c\u7eb3\uff08Wigner\uff09\u6676\u4f53\u662f\u7535\u5b50\u5728\u4f4e\u7535\u5b50\u5bc6\u5ea6\u4e0b\u7a33\u5b9a\u7684\u7ed3\u6676\u76f8\uff0c\u8fd9\u4e00\u7269\u8d28\u5df2\u4f7f\u51dd\u805a\u6001\u7269\u7406\u5b66\u5bb6\u7740\u8ff7\u4e8690\u5e74\u3002\u4e8c\u7ef4\u7ef4\u683c\u7eb3\u6676\u4f53\u7684\u7535\u4f20\u8f93\u7279\u6027\u5728\u9ad8\u78c1\u573a\u7684\u4e8c\u7ef4\u7535\u5b50\u6c14\u4e2d\u88ab\u9996\u6b21\u89c2\u5bdf\u5230\uff0c\u6700\u8fd1\u53c8\u5728\u8fc7\u6e21\u91d1\u5c5e\u4e8c\u786b\u5316\u7269\u6469\u5c14\u8d85\u6676\u683c\u4e2d\u88ab\u62a5\u9053\u3002\u76ee\u524d\uff0c\u7ef4\u683c\u7eb3\u6676\u4f53\u662f\u901a\u8fc7\u4e00\u4e9b\u5149\u5b66\u548c\u7535\u5bfc\u6d4b\u91cf\u7684\u65b9\u6cd5\u8fdb\u884c\u9a8c\u8bc1\u7684\u3002\u867d\u7136\u4f20\u7edf\u7684\u626b\u63cf\u96a7\u9053\u663e\u5fae\u955c\uff08STM\uff09\u5177\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u5206\u8fa8\u7387\uff0c\u4f46\u53ef\u80fd\u4f1a\u5f15\u8d77\u7ef4\u683c\u7eb3\u6676\u6001\u7684\u6270\u52a8\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u7a7a\u95f4\u4e2d\u76f4\u63a5\u89c2\u5bdf\u4e8c\u7ef4\u7ef4\u683c\u7eb3\u6676\u4f53\u4f9d\u7136\u662f\u4e00\u4e2a\u8270\u5de8\u7684\u6311\u6218\u3002<\/p>\n

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

\u9488\u5bf9\u4e0a\u8ff0\u6311\u6218\uff0c\u52a0\u5dde\u5927\u5b66\u4f2f\u514b\u5229\u5206\u6821\u7684<\/strong>Shaowei Li<\/strong>\uff08\u540c\u65f6\u4e3a\u5171\u540c\u7b2c\u4e00\u4f5c\u8005\uff09\u3001<\/strong>Michael F. Crommie<\/strong>\u548c<\/strong>Feng Wang<\/strong>\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba\u5408\u4f5c\u8bbe\u8ba1\u4e86\u4e00\u79cd\u975e\u4fb5\u5165\u6027\u7684STM\u5149\u8c31\u6280\u672f\u5bf9WSe2<\/sub>\/WS2<\/sub>\u6469\u5c14\u5f02\u8d28\u7ed3\u6784\u4e2d\u7684\u4e8c\u7ef4\u7ef4\u683c\u7eb3\u6676\u4f53\u8fdb\u884c\u5b9e\u7a7a\u95f4\u6210\u50cf\u3002\u8fd9\u79cd\u65b9\u6cd5\u5229\u7528\u4e86\u9760\u8fd1WSe2<\/sub>\/WS2<\/sub>\u6469\u5c14\u8d85\u6676\u683c\u7684\u77f3\u58a8\u70ef\u4f20\u611f\u5c42\uff0c\u8fdb\u5165\u77f3\u58a8\u70ef\u5c42\u7684\u5c40\u90e8STM\u96a7\u9053\u7535\u6d41\u7531WSe2<\/sub>\/WS2<\/sub>\u6469\u5c14\u5f02\u8d28\u7ed3\u6784\u4e2d\u7684\u5e95\u5c42\u7ef4\u683c\u7eb3\u6d78\u63d0\u7684\u7535\u5b50\u6676\u683c\u8fdb\u884c\u8c03\u5236\u3002\u7814\u7a76\u5bf9\u5728\u90e8\u5206\u7535\u5b50\u586b\u5145\uff08n<\/em> = 1\/3, 1\/2 \uff0c2\/3\uff09\u7684\u7ef4\u683c\u7eb3\u6676\u683c\u6784\u8c61\u5b9e\u73b0\u4e86\u76f4\u63a5\u53ef\u89c6\u5316\uff08\u5176\u4e2dn<\/em>\u662f\u6bcf\u4e2a\u4f4d\u70b9\u7684\u7535\u5b50\u6570\uff09\u3002\u7814\u7a76\u53d1\u73b0\uff0cn<\/em> = 1\/3\u548c2\/3\u7684\u7ef4\u683c\u7eb3\u6676\u4f53\u5206\u522b\u5177\u6709\u4e09\u89d2\u548c\u8702\u7a9d\u72b6\u6676\u683c\uff0c\u53ef\u6700\u5927\u7a0b\u5ea6\u4e0a\u5730\u51cf\u5c11\u6700\u8fd1\u90bb\u8f68\u9053\u5360\u636e\u60c5\u51b5\u3002\u800cn<\/em> = 1\/2\u6001\u7ef4\u683c\u7eb3\u6676\u4f53\u53ef\u81ea\u53d1\u6253\u7834\u539f\u59cbC3\u5bf9\u79f0\u5e76\u5f62\u6210\u6761\u7eb9\u76f8\u3002\u8be5\u7814\u7a76\u4e3a\u7406\u89e3WSe2<\/sub>\/WS2<\/sub>\u6469\u5c14\u5f02\u8d28\u7ed3\u6784\u4e2d\u7684\u7ef4\u683c\u7eb3\u6676\u4f53\u72b6\u6001\u5960\u5b9a\u4e86\u575a\u5b9e\u7684\u57fa\u7840\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u79cd\u9002\u7528\u5728\u4e8e\u5176\u4ed6\u7cfb\u7edf\u4e2d\u6210\u50cf\u65b0\u578b\u76f8\u5173\u7535\u5b50\u6676\u683c\u7684\u65b9\u6cd5\u3002\u672c\u6587\u5171\u540c\u7b2c\u4e00\u4f5c\u8005\u4e3a<\/strong>Hongyuan Li<\/strong>\u548c<\/strong>Shaowei Li<\/strong>\uff0c\u7814\u7a76\u6210\u679c\u4ee5\u9898\u4e3a\u201cImaging two-dimensional generalized Wigner crystals\u201d<\/strong>\u53d1\u5e03\u5728\u56fd\u9645\u8457\u540d\u671f\u520aNature<\/strong>\u4e0a\u3002<\/p>\n

\"\"<\/p>\n

\u3010\u56fe\u6587\u89e3\u8bfb\u3011<\/strong><\/p>\n

\u56fe\u4e00\u3001<\/strong>WSe2<\/sub>\/WS2<\/sub><\/strong>\u6469\u5c14\u5f02\u8d28\u7ed3\u6784\u4e2d\u7684\u7ef4\u683c\u7eb3\u6676\u4f53\u6d4b\u91cf<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u53cc\u95e8\u63a7WSe2<\/sub>\/WS2<\/sub>\u6469\u5c14\u5f02\u8d28\u7ed3\u6784\u5668\u4ef6\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08b\uff09\u5728\u9876\u90e8\u77f3\u58a8\u70ef\u8868\u9762\u6d4b\u91cf\u7684\u5178\u578b\u5927\u5c3a\u5ea6\u62d3\u6251\u56fe\u50cf\uff1b<\/p>\n

\uff08c\uff09\uff08b\uff09\u4e2d\u7ea2\u8272\u533a\u57df\u7684\u653e\u5927\u56fe\u50cf\uff0c\u7ea2\u8272\u83f1\u5f62\u4e3a\u4e00\u4e2a\u539f\u59cb\u6676\u80de\uff1b<\/p>\n

\uff08d\uff09\u5f53V<\/em>TG<\/sub>=0\u3001V<\/em>BG<\/sub>>0\u65f6\u7684\u5f02\u8d28\u7ed3\u6784\u7684\u80fd\u5e26\u6392\u5217\u548c\u8d39\u7c73\u80fd\u7ea7\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08e\uff09\u5f53V<\/em>TG<\/sub>=0\u65f6\uff0c\u5728AA\u5806\u53e0\u4f4d\u70b9\u4e0a\u7684\u77f3\u58a8\u70ef\u4f20\u611f\u5c42\u4e0a\u6d4b\u5f97\u7684\u4f9d\u8d56\u4e8eV<\/em>BG<\/sub>\u7684dI\/dV\u5149\u8c31\uff1b<\/p>\n

\uff08f\uff09\u5f53V<\/em>TG<\/sub>>0\u3001V<\/em>BG<\/sub>>0\u65f6\u7684\u5f02\u8d28\u7ed3\u6784\u7684\u80fd\u5e26\u6392\u5217\u548c\u8d39\u7c73\u80fd\u7ea7\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08g\uff09\u5f53V<\/em>TG<\/sub>=0.53V\u65f6\uff0c\u5728AA\u5806\u53e0\u4f4d\u70b9\u4e0a\u7684\u77f3\u58a8\u70ef\u4f20\u611f\u5c42\u4e0a\u6d4b\u5f97\u7684\u4f9d\u8d56\u4e8eV<\/em>BG<\/sub>\u7684dI\/dV\u5149\u8c31\uff1b<\/p>\n

\uff08h\uff09\u5f53V<\/em>bias<\/sub>=0.1V\u65f6\uff0c\uff08g\uff09\u4e2ddI\/dV\u5149\u8c31\u7684\u5782\u76f4\u7ebf\u5207\u5272\u5728\u7535\u5b50\u586b\u5145n<\/em> =1\uff0c1\/3, 1\/2 \uff0c2\/3\u5904\u7684\u5cf0\u3002<\/p>\n

\u56fe\u4e8c\u3001<\/strong>\u83ab\u7279\u7edd\u7f18\u4f53\u548c\u5e7f\u4e49\u7ef4\u683c\u7eb3\u6676\u4f53\u6210\u50cf<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u77f3\u58a8\u70ef\u4f20\u611f\u5c42\u4e0b\u65b9WSe2<\/sub>\/WS2<\/sub>\u6469\u5c14\u8d85\u6676\u683c\u4e2d\u76f8\u5173\u72b6\u6001\u6210\u50cf\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08b\uff09\u6469\u5c14\u8d85\u6676\u683c\u7684\u5178\u578bSTM\u56fe\u50cf\uff0c\u663e\u793a\u65e0\u4efb\u4f55\u53d8\u5f62\u6216\u7f3a\u9677\u7684\u5b8c\u7f8e\u6676\u683c\uff1b<\/p>\n

\uff08c\uff09\u7535\u5b50\u586b\u5145n<\/em> =1\u65f6\u83ab\u7279\u7edd\u7f18\u4f53\u7684dI\/dV\u56fe\uff08V<\/em>bias<\/sub>=160 mV\uff0cV<\/em>BG<\/sub>=30 V\uff0cV<\/em>TG<\/sub>=0.53V\uff09\uff1b<\/p>\n

\uff08d\uff09\uff08c\uff09\u4e2d\u6240\u793a\u56fe\u50cf\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\uff1b<\/p>\n

\uff08e\uff09\u7535\u5b50\u586b\u5145n<\/em> =2\/3\u65f6\u7684\u5e7f\u4e49\u7ef4\u683c\u7eb3\u6676\u4f53\u72b6\u6001\u7684dI\/dV\u56fe\uff1b<\/p>\n

\uff08f\uff09\uff08e\uff09\u4e2d\u6240\u793a\u56fe\u50cf\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\uff1b<\/p>\n

\uff08g\uff09 \u7535\u5b50\u586b\u5145n<\/em> =1\/3\u65f6\u7684\u5e7f\u4e49\u7ef4\u683c\u7eb3\u6676\u4f53\u72b6\u6001\u7684dI\/dV\u56fe;<\/p>\n

\uff08h\uff09\uff08g\uff09\u4e2d\u6240\u793a\u56fe\u50cf\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362;<\/p>\n

\uff08i\uff09\u7535\u5b50\u586b\u5145n<\/em> =1\/2\u65f6\u7684\u5e7f\u4e49\u7ef4\u683c\u7eb3\u6676\u4f53\u72b6\u6001\u7684dI\/dV\u56fe;<\/p>\n

\uff08j\uff09\uff08i\uff09\u4e2d\u6240\u793a\u56fe\u50cf\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\u3002<\/p>\n

\u56fe\u4e09\u3001<\/strong>\u968f\u7740\u7684<\/strong>V<\/em><\/strong>bias<\/sub><\/strong>\u589e\u52a0\uff0c<\/strong>n<\/em><\/strong> =2\/3<\/strong>\u7684<\/strong>dI\/dV<\/strong>\u56fe\u6f14\u53d8<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a-e\uff09\u7535\u5b50\u586b\u51452\/3\u65f6\uff0c\u5e7f\u4e49\u7ef4\u683c\u7eb3\u9759\u6001\u7684dI\/dV\u6620\u5c04\u6d4b\u91cf\uff1aV<\/em>bias<\/sub>=130 mV\uff08a\uff09\uff0cV<\/em>bias<\/sub>=145 mV\uff08b\uff09\uff0cV<\/em>bias<\/sub>=160 mV\uff08c\uff09\uff0cV<\/em>bias<\/sub>=175 mV\uff08d\uff09\uff0cV<\/em>bias<\/sub>=190 mV\uff08e\uff09\u3002<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u4e8c\u7ef4\u7ef4\u683c\u7eb3\u6676\u4f53\u7684\u5b9e\u7a7a\u95f4\u6210\u50cf\u5bf9\u6d4b\u91cf\u6280\u672f\u63d0\u51fa\u4e86\u4e25\u683c\u7684\u8981\u6c42\uff0c\u5b83\u5fc5\u987b\u540c\u65f6\u5177\u6709\u9ad8\u7a7a\u95f4\u5206\u8fa8\u7387\u3001\u9ad8\u5355\u7535\u5b50\u7075\u654f\u5ea6\u548c\u5bf9\u7535\u5b50\u6676\u683c\u7684\u4f4e\u6270\u52a8\u3002\u7136\u800c\uff0c\u9ad8\u7075\u654f\u5ea6\u548c\u4f4e\u6270\u52a8\u901a\u5e38\u662f\u76f8\u4e92\u77db\u76fe\uff0c\u56e0\u4e3a\u9ad8\u7075\u654f\u5ea6\u9700\u8981\u4e0e\u7ef4\u683c\u7eb3\u6676\u4f53\u8fdb\u884c\u5f3a\u8026\u5408\uff0c\u800c\u4f4e\u6270\u52a8\u5374\u9700\u8981\u5f31\u8026\u5408\u3002\u4f20\u7edf\u7684\u626b\u63cf\u96a7\u9053\u663e\u5fae\u955c\u6d4b\u91cf\u5177\u6709\u51fa\u8272\u7684\u7a7a\u95f4\u5206\u8fa8\u7387\u548c\u7535\u8377\u7075\u654f\u5ea6\uff0c\u4f46\u7531\u4e8e\u4e0d\u53ef\u907f\u514d\u7684\u5c16\u7aef\u95e8\u63a7\u6548\u5e94\u4f1a\u7834\u574f\u8106\u5f31\u7684\u7ef4\u683c\u7eb3\u6676\u4f53\uff0c\u4f7f\u5f97\u8fd9\u4e00\u65b9\u6cd5\u6781\u5177\u4fb5\u5165\u6027\u3002\u56e0\u6b64\uff0c\u5728\u4e0a\u8ff0\u7814\u7a76\u4e2d\uff0c\u4f5c\u8005\u8bbe\u8ba1\u4e86\u5168\u65b0\u7684STM\u6210\u50cf\u6280\u672f\uff0c\u5c06\u9ad8\u7a7a\u95f4\u5206\u8fa8\u7387\u548c\u7075\u654f\u5ea6\u4e0e\u6700\u5c0f\u6270\u52a8\u76f8\u7ed3\u5408\uff0c\u5e76\u5141\u8bb8\u5728\u5b9e\u7a7a\u95f4\u4e2d\u5bf9\u4e8c\u7ef4\u5e7f\u4e49\u7ef4\u683c\u7eb3\u6676\u4f53\u8fdb\u884c\u76f4\u63a5\u6210\u50cf\u3002\u8be5\u6280\u672f\u6709\u671b\u666e\u904d\u9002\u7528\u4e8e\u5404\u79cd\u8303\u5fb7\u534e\u6469\u5c14\u5f02\u8d28\u7ed3\u6784\uff0c\u5e76\u4e3a\u5728\u4e8c\u7ef4\u7cfb\u7edf\u4e2d\u5bf9\u65b0\u578b\u76f8\u5173\u91cf\u5b50\u76f8\u7684\u5b9e\u7a7a\u95f4\u7535\u5b50\u6784\u8c61\u8fdb\u884c\u6210\u50cf\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Imaging two-dimensional generalized Wigner crystals<\/a>, Nature<\/em>, 2021<\/strong>, DOI: 10.1038\/s 41586-021-03874-9.<\/p>\n","protected":false},"excerpt":{"rendered":"

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