{"id":156375,"date":"2018-10-16T06:30:43","date_gmt":"2018-10-15T22:30:43","guid":{"rendered":"\/\/m.iemloyee.com\/?p=156375"},"modified":"2018-10-15T21:26:33","modified_gmt":"2018-10-15T13:26:33","slug":"%e3%80%90%e5%b7%b2%e5%9b%9e%e5%a4%8d%e3%80%91%e5%8d%97%e4%ba%ac%e5%a4%a7%e5%ad%a6%e6%9d%8e%e7%bb%8d%e6%98%a5%e5%9b%a2%e9%98%9f%e9%87%8d%e5%a4%a7%e5%8f%91%e7%8e%b0%ef%bc%9a%e5%8d%95%e5%b1%821t","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=156375","title":{"rendered":"\u5357\u4eac\u5927\u5b66\u674e\u7ecd\u6625\u56e2\u961f\u91cd\u5927\u53d1\u73b0\uff1a\u5355\u5c421T\u2019-WTe2\u4e2d\u7684\u5e93\u4ed1\u80fd\u9699"},"content":{"rendered":"

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

\u4e8c\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\uff082DTIs\uff09\u5177\u6709\u91cf\u5b50\u81ea\u65cb\u970d\u5c14\uff08QSH\uff09\u6548\u5e94\uff0c\u5728\u672a\u6765\u4f4e\u529f\u8017\u81ea\u65cb\u7535\u5b50\u5668\u4ef6\u53ca\u91cf\u5b50\u8ba1\u7b97\u4e2d\u5177\u6709\u6f5c\u5728\u7684\u5e94\u7528\u524d\u666f\u3002\u5b83\u7684\u4f53\u80fd\u5e26\u5177\u6709\u5e26\u9699\uff0c\u6e90\u4e8e\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff08SOC\uff09\u6548\u5e94\uff1b\u8fb9\u754c\u5904\u5177\u6709\u62d3\u6251\u4fdd\u62a4\u7684\u65e0\u5e26\u9699\u91d1\u5c5e\u6001\uff0c\u5e76\u5177\u6709\u81ea\u65cb-\u52a8\u91cf\u9501\u5b9a\u7279\u6027\u3002\u4e00\u76f4\u4ee5\u6765\uff0c\u7814\u7a76\u4eba\u5458\u90fd\u5728\u7740\u529b\u5bfb\u627e\u53ef\u4ee5\u5b9e\u9645\u5e94\u7528\u76842DTI\u6750\u6599\u3002\u7136\u800c\uff0c\u6709\u6548\u5730\u6291\u5236\u4f53\u7535\u5bfc\u4ece\u800c\u5b9e\u73b0\u91cf\u5b50\u81ea\u65cb\u970d\u5c14\uff08QSH\uff09\u6548\u5e94\u5374\u6781\u5177\u6311\u6218\u3002\u6700\u8fd1\uff0c\u7406\u8bba\u548c\u5b9e\u9a8c\u90fd\u8868\u660e\u5355\u5c421T\u2018-WTe2<\/sub>\u53ef\u80fd\u662f\u4e00\u79cd2DTI\u6750\u6599\u3002<\/p>\n

\u5b58\u5728\u7684\u4e89\u8bae\uff1a<\/strong>\u5b9e\u9a8c\u7ed3\u679c\u8868\u660e\u5355\u5c421T\u2019-WTe2<\/sub>\u5728\u4f4e\u6e29\u4e0b\u5448\u73b0\u51fa\u7edd\u7f18\u884c\u4e3a\uff0c\u8fd9\u4e0e\u5355\u7535\u5b50\u8fd1\u4f3c\u4e0b\u7684DFT\u8ba1\u7b97\u7ed3\u679c\u5e76\u4e0d\u4e00\u81f4\u3002\u4e3a\u89e3\u91ca\u8fd9\u79cd\u77db\u76fe\u73b0\u8c61\uff0c\u5b66\u672f\u754c\u5df2\u7ecf\u63d0\u51fa\u4e86\u82e5\u5e72\u79cd\u7406\u8bba\u6a21\u578b\u3002\u7136\u800c\uff0c\u7531\u4e8e\u7f3a\u4e4f\u5bf9\u5355\u5c421T\u2019-WTe2<\/sub>\u80fd\u5e26\u7ed3\u6784\u7684\u5145\u5206\u7406\u89e3\uff0c\u5b66\u672f\u754c\u5bf9\u6b64\u95ee\u9898\u4ecd\u5b58\u5728\u4e89\u8bae\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u5357\u4eac\u5927\u5b66\u674e\u7ecd\u6625\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u8bfe\u9898\u7ec4\u5728\u4e8c\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u7814\u7a76\u9886\u57df\u53d6\u5f97\u91cd\u5927\u8fdb\u5c55\uff0c\u7814\u7a76\u4eba\u5458\u501f\u52a9\u9ad8\u5206\u8fa8\u626b\u63cf\u96a7\u9053\u663e\u5fae\u955c\u548c\u51c6\u7c92\u5b50\u5e72\u6d89\u6280\u672f\uff0c\u7cbe\u786e\u8868\u5f81\u4e86\u5355\u5c421T\u2019-WTe2<\/sub>\u7684\u80fd\u5e26\u7ed3\u6784\uff0c\u786e\u5b9a\u5176\u4e3a\u534a\u91d1\u5c5e\u578b\u80fd\u5e26\uff0c\u89e3\u51b3\u4e86\u4e00\u76f4\u4ee5\u6765\u5b58\u5728\u7684\u4e89\u8bae\u3002\u540c\u65f6\uff0c\u7814\u7a76\u4eba\u5458\u5728\u8d39\u7c73\u9762\u9644\u8fd1\u89c2\u5bdf\u5230\u4e00\u4e2a\u72ec\u7279\u7684\u80fd\u9699\u3002\u901a\u8fc7STM\u8868\u5f81\uff0c\u53d1\u73b0\u8be5\u80fd\u9699\u4e00\u76f4\u88ab\u9489\u624e\u5728\u8d39\u7c73\u9762\u5904\uff0c\u5e76\u4e14\u53ef\u4ee5\u968f\u7740\u8d39\u7c73\u80fd\u7ea7\u7684\u4f4d\u7f6e\u8c03\u63a7\u800c\u79fb\u52a8\u3002\u901a\u8fc7\u5206\u6790\uff0c\u7814\u7a76\u4eba\u5458\u53d1\u73b0\u8be5\u80fd\u9699\u4e0d\u540c\u4e8e\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff08SOC\uff09\u5e26\u9699\uff0c\u5b83\u662f\u7531\u4e8e\u7535\u5b50-\u7535\u5b50\u76f8\u4e92\u4f5c\u7528\u800c\u6253\u5f00\u7684\u5e93\u4ed1\u80fd\u9699\u3002\u5e93\u4ed1\u80fd\u9699\u7684\u6253\u5f00\u53ef\u4ee5\u6709\u6548\u5730\u6291\u5236WTe2<\/sub>\u4f53\u7535\u5bfc\u7684\u5e72\u6270\uff0c\u5bfc\u81f4\u4f4e\u6e29\u4e0b\u7684\u7edd\u7f18\u6027\u884c\u4e3a\u3002 \u540c\u65f6\uff0c\u5e93\u4ed1\u80fd\u9699\u5bf9\u8fb9\u7f18\u6001\u5e76\u6ca1\u6709\u5f71\u54cd\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u89c2\u5bdf\u5230\u91cf\u5b50\u5316\u7684\u62d3\u6251\u8fb9\u754c\u6001\u7535\u5bfc\u3002\u8be5\u7814\u7a76\u6210\u679c\u4ee5\u9898\u4e3a\u201cObservation of Coulomb gap in the quantum spin Hall candidate single-layer 1T\u2019-WTe2<\/sub><\/strong>\u201d\u53d1\u8868\u5728\u56fd\u9645\u8457\u540d\u671f\u520aNature Communications<\/strong>\u4e0a\u3002<\/p>\n

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

\u56fe\u4e00\u00a0 <\/strong>\u5355\u5c421T\u2019-WTe2<\/sub> <\/strong>\u7684STM<\/strong>\u5f62\u8c8c\u56fe\u548cSTS<\/strong>\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

(a) \u751f\u957f\u5728\u53cc\u5c42\u77f3\u58a8\u70ef\/SiC\u886c\u5e95\u4e0a\u7684\u5355\u5c421T\u2019-WTe2<\/sub>\u539f\u5b50\u7ed3\u6784\u6a21\u578b\uff1b<\/p>\n

(b, c) \u5355\u5c421T\u2019-WTe2<\/sub>\u539f\u5b50\u5206\u8fa8STM\u56fe\u50cf\u53ca\u5bf9\u5e94\u7684\u5e03\u91cc\u6e0a\u533a\uff1b<\/p>\n

(d) STS\u5fae\u5206\u7535\u5bfc\u8c31\u968f\u7a7a\u95f4\u4f4d\u7f6e\u7684\u53d8\u5316\u56fe\uff0c\u5176\u4e2d\u7ea2\u8272\u548c\u84dd\u8272\u7bad\u5934\u5206\u522b\u5bf9\u5e94\u5e93\u4ed1\u80fd\u9699\u548c\u4ef7\/\u5bfc\u5e26\u7684\u4ea4\u53e0\u533a\u57df\uff1b<\/p>\n

(e, f) \u4e24\u4e2a\u5178\u578b\u80fd\u91cf\u7684dI\/dV \u56fe\u3002<\/p>\n

\u56fe\u4e8c\u00a0 <\/strong>\u51c6\u7c92\u5b50\u5e72\u6d89\u56fe\u6837\u4e0e\u4e0d\u540c\u504f\u7f6e\u80fd\u91cf\u4e0b\u7684\u5feb\u901f\u5085\u7acb\u53f6\u53d8\u6362\uff08FFT<\/strong>\uff09\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

(a-d) \u4e0d\u540c\u80fd\u91cf\u4e0b\uff0c\u51c6\u7c92\u5b50\u5e72\u6d89\u56fe\u6848\u7684\u5feb\u901f\u5085\u7acb\u53f6\u53d8\u6362\u7ed3\u679c\uff1b<\/p>\n

(e) \u6cbf\u7740Y-\u0393-Y \u65b9\u5411\u7684\u80fd\u5e26\u7ed3\u6784\u793a\u610f\u56fe\uff1b<\/p>\n

(f) \u7531\u5b9e\u9a8c\u5f97\u5230\u7684Y-\u0393-Y \u65b9\u5411\u7684E-q \u80fd\u5e26\u8272\u6563\u5173\u7cfb\u3002<\/p>\n

\u56fe\u4e09\u00a0 <\/strong>\u51c6\u7c92\u5b50\u5e72\u6d89\uff08QPI<\/strong>\uff09\u56fe\u6837\u4e0eDFT<\/strong>\u6a21\u62df\u7ed3\u679c\u6bd4\u8f83<\/strong><\/p>\n

\"\"<\/p>\n

(a, b) +70\u548c-80 mV\u4e0b\uff0c dI \/ dV\u56fe\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\uff08FFT\uff09\u56fe\u50cf\uff1b<\/p>\n

(c, d) E = + 100 mV\u548cE = -70 mV\u7684\u6052\u5b9a\u80fd\u91cf\u7b49\u503c\u7ebf\u793a\u610f\u56fe\uff1b<\/p>\n

(e, f) \u57fa\u4e8e\u56fec\u3001d\u7684DFT\u6a21\u62df\u51c6\u7c92\u5b50\u5e72\u6d89\u56fe\u6837\u3002<\/p>\n

\u56fe\u56db <\/strong>\u4e0d\u540c\u94be\u8986\u76d6\u5ea6\u4e0b1T\u2019-WTe2<\/sub><\/strong>\u8868\u9762\u7684STS<\/strong>\u8c31\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

(a, b)\u00b11V\uff08a\uff09\u4e0e\u00b1200mV\uff08b\uff09\u7684dI\/dV\u5fae\u5206\u7535\u5bfc\u8c31\uff0c\u9ed1\u8272\u548c\u7070\u8272\u4e09\u89d2\u6807\u8bb0\u7684\u662f\u5fae\u5206\u7535\u5bfc\u8c31\u4e2d\u7684\u7279\u5f81\u70b9\uff0c\u7ea2\u8272\u77ed\u7ebf\u6807\u8bb0\u5e93\u4ed1\u80fd\u9699\u7684\u4f4d\u7f6e\uff1b<\/p>\n

(c) \u56feb\u7684\u653e\u5927\u56fe\uff0c\u5176\u663e\u793a\u8d39\u7c73\u80fd\u7ea7\u9644\u8fd1\u7684DOS\uff1b<\/p>\n

(d) \u56fea\u3001b\u4e2d\u6807\u8bb0\u7279\u5f81\u4f4d\u7f6e\u4e0e\u94be\u8986\u76d6\u5ea6\u7684\u4f9d\u8d56\u5173\u7cfb\u56fe\u3002<\/p>\n

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

\u5728\u8be5\u6587\u4e2d\uff0c\u7814\u7a76\u4eba\u5458\u5df2\u7ecf\u5bf9\u5355\u5c421T’-WTe2<\/sub>\u8fdb\u884c\u4e86\u9ad8\u5206\u8fa8\u7387QPI-STS \/ STM\u8868\u5f81\uff0c\u5e76\u9a8c\u8bc1\u4e86\u5176\u534a\u91d1\u5c5e\u578b\u80fd\u5e26\u7ed3\u6784\uff0c\u5728\u0393\u70b9\u9644\u8fd1\u5b58\u5728\u80fd\u5e26\u53cd\u8f6c\uff0c\u4f46\u662f\u5e76\u6ca1\u6709\u5b8c\u6574\u7684SOC\u8bf1\u5bfc\u4f53\u5e26\u9699\u3002\u5728\u8fd9\u4e2a\u4e8c\u7ef4\u5c40\u57df\u7535\u5b50\u7cfb\u7edf\u4e2d\uff0c\u7814\u7a76\u4eba\u5458\u8fd8\u53d1\u73b0\u4e86\u7531\u7535\u5b50\u76f8\u4e92\u4f5c\u7528\u800c\u5f15\u8d77\u7684\u5e93\u4ed1\u80fd\u9699\u3002\u5355\u5c42QSH\u7cfb\u7edf\u4e2d\u5e93\u4ed1\u80fd\u9699\u7684\u5b58\u5728\uff0c\u5bf9\u4e8e\u6291\u5236\u4f53\u5e26\u8d21\u732e\u5e76\u4e14\u5206\u79bb\u62d3\u6251\u8fb9\u7f18\u6001\u8d77\u5230\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u80fd\u591f\u6781\u5927\u5730\u4fc3\u8fdbQSH\u6548\u5e94\u7684\u5b9e\u73b0\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Observation of Coulomb gap in the quantum spin Hall candidate single-layer 1T\u2019-WTe2<\/sub><\/a>\uff08Nature Communications\uff0c2018\uff0cDOI\uff1a10.1038\/s41467-018-06635-x\uff09<\/p>\n

\u3010\u901a\u8baf\u4f5c\u8005\u4ecb\u7ecd\u3011\uff1a<\/strong><\/p>\n

\u674e\u7ecd\u6625\uff0c\u5357\u4eac\u5927\u5b66\u7269\u7406\u5b66\u9662\u6559\u6388\u3002\u4e3b\u8981\u4ece\u4e8b\u8868\u9762\u7269\u7406\/\u5316\u5b66\u7814\u7a76\u3002\u5229\u7528\u5206\u5b50\u675f\u5916\u5ef6\u6280\u672f\u8fdb\u884c\u4f4e\u7ef4\u8584\u819c\u6750\u6599\u751f\u957f\uff0c\u5e76\u5229\u7528\u9ad8\u5206\u8fa8\u626b\u63cf\u96a7\u9053\u663e\u5fae\u955c\u7814\u7a76\u7535\u5b50\/\u81ea\u65cb\u7684\u57fa\u6001\u548c\u6fc0\u53d1\u6001\uff0c\u5bfb\u627e\u548c\u53d1\u73b0\u65b0\u5947\u7684\u91cf\u5b50\u7279\u6027\u3002\u7814\u7a76\u5bf9\u8c61\u96c6\u4e2d\u4e8e\u5206\u5b50\u529f\u80fd\u6750\u6599\uff0c\u80fd\u6e90\u6750\u6599\uff0c\u91d1\u5c5e\/\u534a\u5bfc\u4f53\u8868\u9762\uff0c\u6c27\u5316\u7269\u4ee5\u53ca\u5176\u4ed6\u65b0\u9896\u7684\u91cf\u5b50\u4f53\u7cfb\u3002\u591a\u6b21\u4ee5\u4e3b\u8981\u4f5c\u8005\u8eab\u4efd\u5728Science, Phys. Rev. Lett.\uff0cJ. Am. Chem. Soc.\uff0cNature \u5b50\u520a\u7b49\u5b66\u672f\u671f\u520a\u64b0\u6587\u3002<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u8ba1\u7b97\u6750\u6599\u7ec4 \u6df1\u6d77\u4e07\u91cc \u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\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\u3002<\/p>\n

\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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