{"id":172197,"date":"2019-04-15T06:33:29","date_gmt":"2019-04-14T22:33:29","guid":{"rendered":"\/\/m.iemloyee.com\/?p=172197"},"modified":"2019-04-14T21:41:18","modified_gmt":"2019-04-14T13:41:18","slug":"%e5%b7%b2%e6%a0%a1-nano-lett-%e6%8b%93%e6%89%91%e7%bb%9d%e7%bc%98%e4%bd%93bisbtese2%e4%b8%ad%e6%8b%93%e6%89%91%e8%a1%a8%e9%9d%a2%e6%80%81%e5%8f%8d%e5%bc%b1%e5%b1%80%e5%9f%9f%e5%8c%96%e6%95%88","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=172197","title":{"rendered":"Nano Lett. : \u62d3\u6251\u7edd\u7f18\u4f53BiSbTeSe2\u4e2d\u62d3\u6251\u8868\u9762\u6001\u53cd\u5f31\u5c40\u57df\u5316\u6548\u5e94\u7684\u5b9a\u91cf\u5206\u6790"},"content":{"rendered":"

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

\n \u5177\u6709\u65e0\u80fd\u9699\u548c\u87ba\u65cb\u72c4\u62c9\u514b\u9525\u7684\u62d3\u6251\u4fdd\u62a4\u8868\u9762\u6001\u662f\u4e09\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u7684\u663e\u8457\u7279\u6027\u4e4b\u4e00\u3002\u62d3\u6251\u8868\u9762\u6001\u7535\u5b50\u7684\u81ea\u65cb\u88ab\u9501\u5b9a\u5728\u5176\u52a8\u91cf\u4e0a\uff0c\u5f53\u5728\u91cf\u5b50\u6269\u6563\u533a\u57df\u4e2d\u7edd\u70ed\u5730\u901a\u8fc7\u65f6\u95f4\u53cd\u6f14\u4fdd\u62a4\u7684\u81ea\u76f8\u4ea4\u8def\u5f84\u540e\u4f1a\u4ea7\u751f\u4e00\u4e2a\u975e\u5e73\u5eb8\u7684\u03c0 \u8d1d\u5229\u76f8\u4f4d\u3002\u8fd9\u79cd\u975e\u5e73\u5eb8\u7684\u03c0 \u8d1d\u5229\u76f8\u4f4d\u5bfc\u81f4\u62d3\u6251\u7edd\u7f18\u4f53\u5728\u4f4e\u78c1\u573a\u8303\u56f4\u51fa\u73b0\u5f31\u53cd\u5c40\u57df\u5316 (WAL)\u6548\u5e94\uff0c\u5373\u5bf9\u7ecf\u5178\u7535\u5b50\u7535\u5bfc\u4ea7\u751f\u91cf\u5b50\u4fee\u6b63\u3002\u6700\u8fd1\uff0c\u4e09\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u4e2d\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u7684\u89c2\u5bdf\u7ed3\u679c\u5df2\u5f97\u5230\u5e7f\u6cdb\u62a5\u9053\u3002\u901a\u5e38\uff0c\u5047\u8bbe\u62d3\u6251\u7edd\u7f18\u4f53\u4f53\u6001\u7684\u78c1\u5bfc\u662f\u5404\u5411\u540c\u6027\u7684\uff0c\u5728\u51cf\u53bb\u5728\u5e73\u884c\u65b9\u5411(\u7535\u6d41\u5e73\u884c\u4e8e\u78c1\u573a\u65b9\u5411)\u4e2d\u6d4b\u91cf\u7684\u4f53\u6001\u7684\u78c1\u5bfc\u4e4b\u540e\u4f7f\u7528Hikami-Larkin-Nagaoka (HLN) \u65b9\u7a0b\u53ef\u4ee5\u5b9a\u91cf\u5730\u5206\u6790\u4e8c\u7ef4\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u3002\u7136\u800c\u6700\u8fd1\u7684\u7814\u7a76\u8868\u660e\uff0c\u62d3\u6251\u7edd\u7f18\u4f53\u4f53\u6001\u7684\u78c1\u5bfc\u662f\u5404\u5411\u5f02\u6027\u7684\u3002\u56e0\u6b64\uff0c\u975e\u5e38\u9700\u8981\u53d1\u5c55\u4e00\u79cd\u53ef\u4ee5\u66f4\u51c6\u786e\u5730\u6d88\u9664\u4f53\u6001\u78c1\u5bfc\u8d21\u732e\u7684\u65b9\u6cd5\uff0c\u4ee5\u5b9a\u91cf\u5206\u6790\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong>
\n \u8fd1\u65e5\uff0c\u9999\u6e2f\u79d1\u6280\u5927\u5b66\u738b\u5efa\u519c\u6559\u6388(\u901a\u8baf\u4f5c\u8005)\u8bfe\u9898\u7ec4\u7684\u674e\u60e0\u535a\u58eb\u7b49\u4eba<\/strong>\u63d0\u51fa\u53ef\u901a\u8fc7\u6d4b\u91cf\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u6765\u51c6\u786e\u5b9a\u5206\u6790\u62d3\u6251\u7edd\u7f18\u4f53BiSbTeSe2<\/sub> (BSTS)\u4e2d\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\uff0c\u5e76\u5728Nano Lett.<\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cQuantitative Analysis of Weak Antilocalization Effect of Topological Surface States in Topological Insulator BiSbTeSe2<\/sub><\/strong>\u201d\u7684\u7814\u7a76\u8bba\u6587\u3002\u4f5c\u8005\u89c2\u5bdf\u5230\u7531BSTS\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u5f15\u8d77\u7684\u5f02\u5e38\u7535\u5bfc\u5cf0\u4ee5\u53ca\u4f53\u6001\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u3002\u5728\u51cf\u53bb\u4f53\u6001\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u540e\uff0c\u53ef\u4f7f\u7528HLN\u8868\u8fbe\u5f0f\u5b9a\u91cf\u5206\u6790\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u3002\u8be5\u7814\u7a76\u7ed3\u679c\u4e3a\u5b9a\u91cf\u5206\u6790\u62d3\u6251\u7edd\u7f18\u4f53\u4e2d\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u63d0\u4f9b\u4e86\u4e00\u79cd\u53ef\u80fd\u66ff\u4ee3\u9014\u5f84\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong>
\n \u56fe1 BSTS\u5668\u4ef6\u548c\u78c1\u7535\u8f93\u8fd0\u7279\u6027<\/strong><\/p>\n

\"\"<\/p>\n

a) BSTS\u5668\u4ef6\u7684\u5149\u5b66\u56fe\u50cf\uff1b
\n b) \u96f6\u78c1\u573a\u4e0b\uff0cBSTS\u5668\u4ef6\u7535\u963b(R)\u968f\u6e29\u5ea6(T)\u7684\u53d8\u5316\uff1b
\n c) x-z\u5e73\u9762\u4e2d\uff0cT = 2 K\u65f6\uff0cBSTS\u5668\u4ef6\u5728\u65bd\u52a0\u78c1\u573a\u65b9\u5411\u4e0e\u7535\u6d41(I)\u65b9\u5411\u5782\u76f4(\u03b8 = 0\u00b0\uff0c\u9ed1\u8272\u66f2\u7ebf)\u548c\u5e73\u884c(\u03b8 = 90\u00b0\uff0c\u7ea2\u8272\u66f2\u7ebf)\u65f6\u7684\u78c1\u963b\u66f2\u7ebf\uff1b
\n d) T = 2 K\u548c\u4f4e\u78c1\u573a\u8303\u56f4\u4e0b\u7684BSTS\u5668\u4ef6\u5728\u4e0d\u540c\u7684\u503e\u659c\u89d2\u03b8\u4e0b\u6d4b\u91cf\u7684\u78c1\u5bfc\u7387\u968f\u78c1\u573a\u6cd5\u7ebf\u5206\u91cf\u7684\u53d8\u5316\u66f2\u7ebf\uff0c\u7ea2\u8272\u5b9e\u7ebf\u662f\u4f7f\u7528HLN\u65b9\u7a0b\u7684\u62df\u5408\u66f2\u7ebf\u3002<\/p>\n

\u56fe2 \u5404\u5411\u5f02\u6027\u78c1\u963b(AMC)\u5728x-z\u5e73\u9762\u503e\u659c\u4e2d\u968f\u78c1\u573a\u7684\u53d8\u5316<\/strong><\/p>\n

\"\"<\/p>\n

a) T = 2 K\u3001B = 2 T\u65f6\uff0cBSTS\u5668\u4ef6\u7eb5\u5411\u7535\u5bfcGxx<\/sub> (\u9ed1\u8272\u7a7a\u5fc3\u65b9\u5757)\u968f\u89d2\u5ea6\u7684\u53d8\u5316\uff0c\u7ea2\u8272\u548c\u7eff\u8272\u66f2\u7ebf\u5206\u522b\u662f\u7528\u4e0d\u540c\u516c\u5f0f\u62df\u5408\u7684\u5bf9\u7167\u7ed3\u679c\uff1b
\n b) T = 2 K\u3001B = 2 T\u65f6\uff0cBSTS\u5668\u4ef6\u7eb5\u5411\u7535\u5bfcGxx<\/sub> (\u9ed1\u8272\u7a7a\u5fc3\u65b9\u5757)\u968f\u89d2\u5ea6\u7684\u53d8\u5316\uff0c\u7ea2\u8272\u66f2\u7ebf\u662f\u6587\u4e2d\u516c\u5f0f(1)\u62df\u5408\u7684\u7ed3\u679c\uff0c\u84dd\u8272\u66f2\u7ebf\u662f\u62df\u5408\u5f97\u5230\u7684\u4f53\u6001\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u3002
\n c) \u0394Gxx<\/sub> (\u9ed1\u8272\u7a7a\u5fc3\u65b9\u5757)\u968f\u89d2\u5ea6\u7684\u53d8\u5316\uff0c\u0394Gxx<\/sub>\u5373T = 2 K\u3001B = 2 T\u65f6\uff0c\u6d4b\u91cf\u7684\u7eb5\u5411\u7535\u5bfcGxx(\u03b8)\u4e0e\u56feb\u4e2d\u7684\u84dd\u8272\u66f2\u7ebf\u4e4b\u95f4\u7684\u5dee\u503c\uff0c\u7ea2\u8272\u66f2\u7ebf\u662fHLN\u8868\u8fbe\u5f0f\u62df\u5408\u7ed3\u679c\u3002
\n d) \u5728T = 2 K\u65f6\u8868\u9762\u6001\u8d21\u732e\u7387\u968f\u78c1\u573a\u7684\u53d8\u5316\u3002<\/p>\n

\u56fe3 \u5404\u5411\u5f02\u6027\u78c1\u963b(AMC)\u5728x-z\u5e73\u9762\u503e\u659c\u4e2d\u968f\u6e29\u5ea6\u7684\u53d8\u5316<\/strong><\/p>\n

\"\"<\/p>\n

a) \u4e0d\u540c\u6e29\u5ea6\u4e0b\u7684BSTS\u5668\u4ef6\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc\uff0c\u6d4b\u91cf\u78c1\u573a\u5927\u5c0f\u4e3a2 T\uff1b
\n b) \u4e0d\u540c\u6e29\u5ea6\u4e0bBSTS\u5668\u4ef6\u7684\u78c1\u7535\u963b\u66f2\u7ebf\uff0c\u5176\u4e2d\u5728T <50 K\u65f6\u53ef\u4ee5\u89c2\u5bdf\u5230BSTS\u5728\u4f4e\u78c1\u573a\u4e0b\u7684WAL\u6548\u5e94\uff1b
\n c) B =2 T\u65f6BSTS\u8868\u9762\u6001\u8d21\u732e\u7387\u968f\u6d4b\u91cf\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

\u56fe4 BSTS\u5668\u4ef6\u6805\u6781\u7535\u538b\u53ef\u8c03\u7684\u78c1\u7535\u8f93\u8fd0\u7279\u6027<\/strong><\/p>\n

\"\"<\/p>\n

a) \u4e0d\u540c\u6805\u6781\u7535\u538b\u4e0bBSTS\u5668\u4ef6\u5728\u96f6\u78c1\u573a\u4e2d\u7684R-T\u66f2\u7ebf\uff1b
\n b) \u4e0d\u540c\u6805\u6781\u7535\u538b\u4e0bBSTS\u5668\u4ef6\u7684\u970d\u5c14\u7535\u963b (Rxy<\/sub>) \u968f\u6d4b\u91cf\u78c1\u573a\u7684\u53d8\u5316\uff0c\u7ea2\u7ebf\u4e3a\u7ebf\u6027\u62df\u5408\u7ed3\u679c\uff1b
\n c) BSTS\u5668\u4ef6\u7684\u8f7d\u6d41\u5b50\u5bc6\u5ea6\u4e0e\u6805\u6781\u7535\u538b\u7684\u5173\u7cfb\uff1b
\n d) \u4e0d\u540c\u6805\u6781\u7535\u538b\u4e0b\uff0cBSTS\u5668\u4ef6\u7684\u78c1\u963b\u66f2\u7ebf\uff0c\u5185\u63d2\u4e3aVG<\/sub> = -2 V\u3001T = 2 K\u7684\u4f4e\u78c1\u573a\u4e2d\u6d4b\u91cf\u7684WAL\u6548\u5e94\uff0c\u7ea2\u8272\u5b9e\u7ebf\u662f\u4f7f\u7528HLN\u65b9\u7a0b\u7684\u62df\u5408\u66f2\u7ebf\u3002<\/p>\n

\u56fe5 BSTS\u5668\u4ef6\u6805\u6781\u7535\u538b\u53ef\u8c03\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc<\/strong><\/p>\n

\"\"<\/p>\n

a) \u4e0d\u540c\u6805\u6781\u7535\u538b\u4e0b\uff0cBSTS\u5668\u4ef6\u5728B = 3 T\u3001T = 2 K\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u66f2\u7ebf\uff1b
\n b) VG<\/sub> = -2 V\u3001B = 3 T\u3001T = 2 K\u65f6\uff0cBSTS\u5668\u4ef6\u7eb5\u5411\u7535\u5bfcGxx<\/sub>(\u9ed1\u8272\u7a7a\u5fc3\u65b9\u5757)\u968f\u89d2\u5ea6\u7684\u53d8\u5316\uff0c\u7ea2\u8272\u66f2\u7ebf\u662f\u6587\u4e2d\u516c\u5f0f(1)\u62df\u5408\u7684\u7ed3\u679c\uff0c\u84dd\u8272\u66f2\u7ebf\u662f\u62df\u5408\u5f97\u5230\u7684\u4f53\u6001\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u3002
\n c) \u0394Gxx<\/sub>(\u9ed1\u8272\u7a7a\u5fc3\u65b9\u5757)\u968f\u89d2\u5ea6\u7684\u53d8\u5316\uff0c\u0394Gxx<\/sub>\u5373\u6d4b\u91cf\u7684\u7eb5\u5411\u7535\u5bfcGxx<\/sub>(\u03b8)\u4e0e\u56feb\u4e2d\u84dd\u8272\u66f2\u7ebf\u4e4b\u95f4\u7684\u5dee\u503c\uff0c\u7ea2\u8272\u66f2\u7ebf\u662fHLN\u8868\u8fbe\u5f0f\u7684\u62df\u5408\u7ed3\u679c\u3002<\/p>\n

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

\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u4f5c\u8005\u901a\u8fc7\u6d4b\u91cf\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u7387\u5bf9\u62d3\u6251\u7edd\u7f18\u4f53BiSbTeSe2<\/sub>(BSTS)\u4e2d\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u8fdb\u884c\u4e86\u5b9a\u91cf\u548c\u7cbe\u786e\u5206\u6790\u3002\u4f5c\u8005\u89c2\u5bdf\u5230\u6e90\u81eaBSTS\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u5e73\u884c\u53d6\u5411\u7684\u5f02\u5e38\u7535\u5bfc\u5cf0\u4ee5\u53ca\u4f53\u6001\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u3002\u901a\u8fc7\u6d88\u9664\u4f53\u76f8\u6001\u7684\u5404\u5411\u5f02\u6027\u78c1\u5bfc\u7684\u8d21\u732e\uff0c\u4f7f\u7528HLN\u65b9\u7a0b\u8fdb\u4e00\u6b65\u5b9a\u91cf\u548c\u7cbe\u786e\u5730\u5206\u6790\u62d3\u6251\u8868\u9762\u6001\u7684WAL\u6548\u5e94\u3002\u8be5\u7814\u7a76\u7ed3\u679c\u4e3a\u62d3\u6251\u7edd\u7f18\u5b50\u4e2d\u62d3\u6251\u8868\u9762\u6001WAL\u6548\u5e94\u7684\u7cbe\u786e\u7684\u5b9a\u91cf\u5206\u6790\u63d0\u4f9b\u4e86\u4e00\u79cd\u66ff\u4ee3\u9014\u5f84\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aQuantitative Analysis of Weak Antilocalization Effect of Topological Surface States in Topological Insulator BiSbTeSe2 <\/sub><\/a><\/strong>(Nano Lett.<\/strong>, 2019, DOI: 10.1021\/acs.nanolett.8b05186)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8abc940504\u3010\u8096\u6770\u3011\u7f16\u8bd1\u6574\u7406\u3002<\/p>\n

\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu\uff0c\u6211\u4eec\u4f1a\u9080\u8bf7\u5404\u4f4d\u8001\u5e08\u52a0\u5165\u4e13\u5bb6\u7fa4\u3002<\/strong><\/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\u7bb1tougao@cailiaoren.com\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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