{"id":102076,"date":"2017-09-25T14:00:33","date_gmt":"2017-09-25T06:00:33","guid":{"rendered":"\/\/m.iemloyee.com\/?p=102076"},"modified":"2017-09-24T21:24:40","modified_gmt":"2017-09-24T13:24:40","slug":"phys-rev-lett-%ef%bc%9a%e5%a4%9a%e4%bb%b7%e9%a9%b1%e5%8a%a8%e5%bd%a2%e6%88%90%e7%a2%b2%e5%9f%ba%e5%a4%9a%e5%b1%82%e6%9d%90%e6%96%99%ef%bc%9a%e4%b8%80%e9%a1%b9%e7%ac%ac%e4%b8%80%e6%80%a7%e5%8e%9f","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=102076","title":{"rendered":"Phys. Rev. Lett.\uff1a\u591a\u4ef7\u9a71\u52a8\u5f62\u6210\u78b2\u57fa\u591a\u5c42\u6750\u6599\uff1a\u4e00\u9879\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u4e0e\u5b9e\u9a8c\u7ed3\u5408\u7684\u7814\u7a76"},"content":{"rendered":"

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

\u4e8c\u7ef4\u6750\u6599\u7814\u7a76\u7684\u7a81\u98de\u731b\u8fdb\u5728\u5f53\u4eca\u79d1\u5b66\u9886\u57df\u6709\u76ee\u5171\u7779\uff0c\u6240\u5305\u542b\u7684\u6750\u6599\u5404\u5177\u5947\u7279\u7684\u6027\u8d28\uff0c\u4e14\u6709\u7740\u57fa\u7840\u6216\u5e94\u7528\u5c42\u9762\u7684\u91cd\u8981\u610f\u4e49\u3002\u8fd1\u5e74\u6765\uff0c\u4e3a\u5c06\u5176\u5e94\u7528\u4e8e\u7528\u4e8e\u591a\u79cd\u4eea\u5668\u8bbe\u5907\u4e2d\uff0c\u5bf9\u4e8c\u7ef4\u6750\u6599\u7684\u5947\u7279\u6027\u8d28\u5c55\u5f00\u4e86\u6df1\u5165\u7814\u7a76\u53ca\u5f00\u53d1\u3002\u7ee7\u9996\u4e2a\u77f3\u58a8\u70ef\u7cfb\u4e8c\u7ef4\u6750\u6599\u4e4b\u540e\uff0c\u5305\u62ec\u7845\u70ef\u548c\u9521\u70ef\u5728\u5185\u7684\u7b2c\u56db\u65cf\u5355\u5c42\u6750\u6599\uff0c\u7b2c\u4e94\u65cf\u5355\u5c42\u6750\u6599\u9ed1\u78f7\u70ef\u3001\u84dd\u78f7\u70ef\u548c\u9511\u70ef\uff0c\u7b2c\u4e09\u65cf\u5355\u5c42\u7684\u787c\u70ef\u2026\u2026\u8bb8\u591a\u4e8c\u7ef4\u6750\u6599\u88ab\u5408\u6210\u51fa\u6765\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u8fc7\u6e21\u91d1\u5c5e\u53cc\u786b\u5c5e\u5316\u5408\u7269\u51ed\u501f\u5176\u76f8\u5bf9\u5bbd\u3001\u53ef\u8c03\u8c10\u7684\u76f4\u63a5\u5e26\u9699\u4ee5\u53ca\u8f83\u5f3a\u7684\u672c\u5f81\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff0c\u53d7\u5230\u4e86\u5927\u91cf\u5173\u6ce8\u3002\u7136\u800c\uff0c\u76f4\u81f3\u4eca\u65e5\u4ecd\u8ba9\u4eba\u8ff7\u60d1\u7684\u662f\uff0c\u6ca1\u6709\u7b2c\u516d\u65cf\u5143\u7d20\u7684\u5355\u5c42\u6750\u6599\u88ab\u9884\u6d4b\u6216\u5236\u5907\u51fa\u6765\uff0c\u5176\u5b58\u5728\u7684\u53ef\u80fd\u6027\u4e0d\u4ec5\u8fdb\u4e00\u6b65\u4e30\u5bcc\u4e86\u7814\u7a76\u8005\u4eec\u5bf9\u4e8c\u7ef4\u6750\u6599\u9886\u57df\u8303\u56f4\u7684\u7406\u89e3\uff0c\u8fd8\u53ef\u4ee5\u4ece\u5b83\u4eec\u5947\u7279\u7684\u7269\u7406\u5316\u5b66\u6027\u80fd\u51fa\u53d1\uff0c\u63d0\u51fa\u65b0\u7684\u5e94\u7528\u65b9\u5411\u3002<\/p>\n

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

\u4e2d\u56fd\u79d1\u5b66\u6280\u672f\u5927\u5b66\u5f20\u632f\u5b87\u6559\u6388<\/strong>\u548c\u90d1\u5dde\u5927\u5b66\u8d3e\u745c\u6559\u6388\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u5728Physical Review Letters<\/strong>\u4e0a\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u4e3a\u201c<\/strong>Multivalency-Driven Formation of Te-Based Monolayer Materials: A Combined First-Principles and Experimental study<\/strong>\u201d<\/strong>\u7684\u6587\u7ae0\uff0c\u901a\u8fc7\u5c06\u7c92\u5b50\u7fa4\u7b97\u6cd5\u548c\u7b2c\u4e00\u6027\u539f\u7406\u7684\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u8ba1\u7b97\u76f8\u7ed3\u5408\uff0c\u7814\u7a76\u4eba\u5458\u9884\u6d4b\u4e86\u4e00\u79cd\u65b0\u7684\u4e8c\u7ef4\u5355\u5c42\u6750\u6599\uff0c\u547d\u540d\u4e3a\u78b2\u70ef\uff0c\u7531\u51c6\u91d1\u5c5e\u5143\u7d20\u78b2\u7ec4\u6210\uff0c\u5177\u6709\u03b1-Te\uff0c\u03b2-Te\u548c\u03b3-Te\u4e09\u79cd\u7ed3\u6784\u3002\u78b2\u6709\u591a\u5316\u5408\u4ef7\u8fd9\u4e00\u672c\u5f81\u5c5e\u6027\u662f\u6839\u672c\u7684\u5f62\u6210\u673a\u5236\u3002\u4e2d\u95f4\u5c42\u7684\u78b2\u4e3b\u8981\u8868\u73b0\u4e3a\u91d1\u5c5e\u6027\u8d28\uff08\u4f8b\u5982\uff0cMo)\uff0c\u4e24\u4e2a\u5916\u5c42\u4e3b\u8981\u8868\u73b0\u4e3a\u534a\u5bfc\u4f53\u6027\u8d28\uff08\u4f8b\u5982\uff0cS\uff09\u3002\u540c\u65f6\uff0c\u03b1-Te\u76f8\u88ab\u6cbf\u5757\u72b6\u78b2\u7684\u4e09\u89d2\u7ed3\u6784\u7684[001]\u65b9\u5411\u7f29\u77ed\u7684\u4e09\u5c42\u5206\u5272\uff0c\u800c\u81ea\u53d1\u5730\u4ece\u539a\u5c42\u4e2d\u4ea7\u751f\u3002\u03b1-Te\u548c\u03b2-Te\u76f8\u6709\u7740\u6bd4MoS2<\/sub>\u66f4\u9ad8\u7684\u7535\u5b50\u8fc1\u79fb\u7387\u548c\u7a7a\u7a74\u8fc1\u79fb\u7387\u3002\u5e76\u4e14\uff0c\u4f5c\u8005\u63d0\u51fa\u4e86\u521d\u6b65\u4f46\u5177\u6709\u53ef\u8bf4\u670d\u529b\u7684\u5b9e\u9a8c\u8bc1\u636e\uff0c\u5448\u73b0\u4e86\u5728\u9ad8\u5b9a\u5411\u70ed\u89e3\u77f3\u58a8\u57fa\u5e95\u4e0a\u7684\u78b2\u5206\u5c42\u884c\u4e3a\uff0c\u5e76\u9884\u6d4bSe\u7684\u5c42\u72b6\u884c\u4e3a\u4e2d\u591a\u4ef7\u6001\u7684\u91cd\u8981\u6027\u3002\u8fd9\u4e9b\u53d1\u73b0\u6709\u6548\u5730\u5c06\u4e8c\u7ef4\u6750\u6599\u7684\u8303\u56f4\u6269\u5c55\u5230\u4e86\u7b2c\u516d\u65cf\u5143\u7d20\u3002<\/p>\n

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

\u56fe1\uff1a\u4e0d\u540c\u76f8\u7684\u78b2\u70ef\u6700\u4f73\u7ed3\u6784\u7684\u9876\u89c6\u56fe\u548c\u4fa7\u89c6\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

(a) \u03b1-Te (b) \u03b2-Te (c) \u03b3-Te\u3002(d)\u4e3a\u03b1\u76f8\uff08\u6216\u03b2\u76f8\uff09\u5e03\u91cc\u6e0a\u533a\u7684\u8868\u9762\u3002\u865a\u7ebf\u8868\u793a\u6bcf\u4e2a\u7ed3\u6784\u7684\u5355\u80de\uff0c\u5728\u6c34\u5e73\u548c\u5782\u76f4\u76f8\u4ea4\u533a\u57df\u7684\u84dd\u8272\u70b9\u72b6\u7ebf\u8868\u793a\u603b\u7535\u8377\u5bc6\u5ea6\u3002<\/p>\n

\u56fe2\uff1a\u5404\u76f8\u7684\u80fd\u5e26\u7ed3\u6784<\/strong><\/p>\n

\"\"<\/p>\n

(a) \u03b1-Te (b) \u03b2-Te (c) \u03b3-Te\uff0c\u7531PBE\u6a21\u5f0f\u5f97\u5230\u7684\u66f2\u7ebf\uff0c\u542b\u6709SOC\u4e3a\u5b9e\u7ebf\uff0c\u4e0d\u542b\u6709SOC\u4e3a\u865a\u7ebf\u3002(d) \u7531PBE\u6a21\u5f0f\uff08PBE+SOC\uff09\u548cHSE\u6a21\u5f0f\uff08HSE+SOC\uff09\u5f97\u5230\u7684\u5e26\u9699\uff0c\u7528\u5929\u84dd\u8272\u67f1\u548c\u7ea2\u8272\u67f1\u5206\u522b\u8868\u793a\u3002<\/p>\n

\u56fe3\uff1a\u4e8c\u7ef4Te\u7ed3\u6784\u5206\u6790<\/strong><\/p>\n

\"\"<\/p>\n

\u00a0(a)\u6839\u636e\u8584\u819c\u539a\u5ea6\u5f97\u5230\u7684\u5b8c\u5168\u5f1b\u8c6b\u7684\u4e8c\u7ef4Te\u5f62\u6210\u80fd\uff0c\u503c\u8d8a\u5c0f\u4ee3\u8868\u7ed3\u6784\u8d8a\u7a33\u5b9a\u3002\u6b63\u7684E<\/em>f<\/sub>\u503c\u8868\u793a\u5757\u4f53Te-I\u7684\u7ed3\u6784\u4e0d\u7a33\u5b9a\u3002\u63d2\u56fe\u8868\u793aE<\/em>f<\/sub>\u7684\u4e8c\u9636\u5dee\u5206\uff0c\u6b63\u503c\u8868\u793a\u7cfb\u7edf\u66f4\u52a0\u7a33\u5b9a\u3002<\/p>\n

(b)\u6839\u636e\u539a\u5ea6\u6240\u5f97\uff0c\u5f1b\u8c6b\u7684\u4e8c\u7ef4Te\u5c42\u72b6\u5206\u89e3\u540e\u4e2d\u95f4\u5c42\u7684\u7a7a\u95f4\u5206\u5e03\u3002\u865a\u7ebf\u8868\u793a\u5757\u4f53Te\u7684\u539f\u5b50\u5c42\u72b6\u533a\u57df\u3002<\/p>\n

(c-d)N<\/em>=8\u62169\u65f6\uff0c\u7ed3\u6784\u6700\u4f18\u5316\u524d\u540e\u4e8c\u7ef4Te\u7684\u51e0\u4f55\u7ed3\u6784\uff0c\u76f8\u5e94\u7ed3\u6784\u5728\u4e0b\u65b9\u6807\u51fa\u3002<\/p>\n

\u56fe4\uff1aSTM\u663e\u5fae\u56fe\u50cf<\/strong><\/p>\n

\"\"<\/p>\n

(a)HOPG\u57fa\u5e95\u4e0a\u751f\u957f\u7684\u5916\u5ef6Te\u8584\u819c\u7684STM\u663e\u5fae\u56fe\u50cf\uff08\u56fe\u50cf\u5c3a\u5bf8\uff1a75\u00d775nm2<\/sup>\uff0c\u96a7\u9053\u7535\u6d41\uff1a100pA\uff0c\u6837\u672c\u504f\u5dee\uff1a0.6V\uff09\u3002\u63d2\u56fe\u4e3a\u6cbf\u9ed1\u7ebf\u7684\u9ad8\u5ea6\u5256\u9762\u3002<\/p>\n

(b)\u539f\u5b50\u5206\u8fa8STM\u56fe\u50cf\uff08\u5c3a\u5bf8\uff1a3.5\u00d72.2nm2<\/sup>\uff09\uff0c\u77e9\u5f62\u5355\u5143\u7ed3\u6784\u5982\u56fe\u6240\u793a\u3002<\/p>\n

(c)\u03b2-Te\u76f8\u53cc\u5c42\u819c\u7684\u4fa7\u89c6\u56fe\uff0c\u6210\u4ed9\u4e86\u8ba1\u7b97\u5f97\u5230\u7684\u5355\u5c42\u539a\u5ea6\u548c\u4e2d\u95f4\u5c42\u7a7a\u95f4\u533a\u57df\u3002<\/p>\n

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

\u5728\u672c\u9879\u5de5\u4f5c\u4e2d\uff0c\u6700\u65b0\u7684\u7ed3\u5408\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u7684\u5168\u9762\u7ed3\u6784\u641c\u7d22\u53ef\u53d1\u73b0\u6210\u5206\u4e3a\u7b2c\u4e94\u65cf\u5143\u7d20Te\u7684\u65b0\u578b\u4e8c\u7ef4\u6750\u6599\u3002\u8fd9\u4e9b\u79f0\u4f5c\u78b2\u70ef\u7684\u65b0\u4e8c\u7ef4\u6750\u6599\u80fd\u591f\u4ee5\u7c7bMoS2<\/sub>\uff08\u03b1-Te, \u03b3-Te\uff09\u548c\u56db\u65b9\u7ed3\u6784\uff08\u03b2-Te\uff09\u5f62\u5f0f\u7a33\u5b9a\u5b58\u5728\uff0c\u4ed6\u4eec\u7684\u6f5c\u5728\u5f62\u6210\u673a\u5236\u690d\u6839\u4e8eTe\u7684\u672c\u5f81\u591a\u4ef7\u6027\u3002\u03b1-Te\u548c\u03b2-Te\u5355\u5c42\u6750\u6599\u8868\u73b0\u51fa\u4f18\u5f02\u7684\u5149\u5438\u6536\u80fd\u529b\uff0c\u5177\u6709\u6bd4MoS2<\/sub>\u66f4\u9ad8\u7684\u8fc1\u79fb\u901f\u5ea6\u3002\u03b1-Te\u591a\u5c42\u7ed3\u6784\u53ef\u5728\u5757\u72b6\u622a\u65ad\u8584\u819c\u4e2d\u81ea\u53d1\u751f\u6210\uff0c\u901a\u8fc7\u5947\u7279\u7684\u539a\u5ea6\u76f8\u5173\u7ed3\u6784\u76f8\u3002\u76f8\u90bb\u78b2\u70ef\u5c42\u95f4\u7684\u8026\u5408\u662f\u8303\u5fb7\u534e\u578b\u7684\uff0c\u4f7f\u5f97\u78b2\u70ef\u7684\u5c42\u5206\u79bb\u53ef\u901a\u8fc7\u673a\u68b0\u5265\u79bb\u8f83\u5bb9\u6613\u5730\u5b9e\u73b0\u3002\u4f5c\u8005\u63d0\u51fa\u4e86\u521d\u6b65\u4f46\u5177\u6709\u53ef\u8bf4\u670d\u529b\u7684\u5b9e\u9a8c\u8bc1\u636e\uff0c\u5448\u73b0\u4e86\u5728\u9ad8\u5b9a\u5411\u70ed\u89e3\u77f3\u58a8\u57fa\u5e95\u4e0a\u7684\u78b2\u5206\u5c42\u884c\u4e3a\uff0c\u5e76\u9884\u6d4bSe\u7684\u5c42\u72b6\u884c\u4e3a\u4e2d\u591a\u4ef7\u6001\u7684\u91cd\u8981\u6027\u3002\u8fd9\u4e9b\u53d1\u73b0\u6709\u6548\u5730\u5c06\u4e8c\u7ef4\u6750\u6599\u7684\u8303\u56f4\u6269\u5c55\u5230\u4e86\u7b2c\u516d\u65cf\u5143\u7d20\u3002<\/p>\n

 <\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Zhu Z, Cai X, Yi S, et al. Multivalency-Driven Formation of Te-Based Monolayer Materials: A Combined First-Principles and Experimental study[J]. Physical Review Letters, 2017, 119(10): 106101.<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u8ba1\u7b97\u6750\u6599\u5b66\u672f\u7ec4\u5b59\u80dc\u541b\u7f16\u8bd1\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

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