{"id":178394,"date":"2019-06-23T06:48:49","date_gmt":"2019-06-22T22:48:49","guid":{"rendered":"\/\/m.iemloyee.com\/?p=178394"},"modified":"2019-06-22T22:16:19","modified_gmt":"2019-06-22T14:16:19","slug":"%e5%9b%bd%e9%98%b2%e7%a7%91%e5%a4%a7%e5%8d%97%e7%a7%91%e5%a4%a7nano-letters%ef%bc%9a%e9%80%9a%e8%bf%87%e8%83%bd%e5%b8%a6%e8%b0%83%e6%8e%a7%e5%88%a4%e6%96%ad%e4%b8%89%e7%bb%b4%e6%8b%93%e6%89%91","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=178394","title":{"rendered":"\u56fd\u9632\u79d1\u5927&\u5357\u79d1\u5927Nano Letters\uff1a\u901a\u8fc7\u80fd\u5e26\u8c03\u63a7\u5224\u65ad\u4e09\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u5728\u4e8c\u7ef4\u6781\u9650\u4e0b\u7684\u62d3\u6251\u6027"},"content":{"rendered":"

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

\u73b0\u4ee3\u51dd\u805a\u6001\u7269\u7406\u7684\u6838\u5fc3\u76ee\u6807\u4e4b\u4e00\u662f\u5b9e\u73b0\u7269\u8d28\u7684\u65b0\u91cf\u5b50\u76f8\uff0c\u5e76\u5bf9\u5b83\u4eec\u7684\u6027\u8d28\u8fdb\u884c\u5b9e\u9645\u64cd\u63a7\u3002\u62d3\u6251\u7edd\u7f18\u4f53\uff08TI\uff09\u4e3a\u672a\u6765\u7684\u81ea\u65cb\u7535\u5b50\u5b66\u548c\u91cf\u5b50\u8ba1\u7b97\u5e26\u6765\u4e86\u5de8\u5927\u7684\u5e0c\u671b\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u6b64\u7c7b\u5e94\u7528\uff0c\u4e0d\u53ef\u907f\u514d\u5730\u9700\u8981\u7cbe\u786e\u7684\u63a7\u5236\u8d85\u8584TI\u8584\u819c\uff08\u51e0\u4e2a\u539f\u5b50\u5c42\u539a\uff09\u7684\u5c42\u6570\u548c\u7ec4\u4efd\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u56fd\u9632\u79d1\u6280\u5927\u5b66\uff0c\u5357\u65b9\u79d1\u6280\u5927\u5b66\u4ee5\u53ca\u6e05\u534e\u5927\u5b66\u7684\u56e2\u961f<\/strong>\u7814\u7a76\u4e86(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub> (0\u2264x\u22641)\u8584\u819c\u7684\u62d3\u6251\u6027\u8d28\u53ca\u7535\u5b50\u7ed3\u6784\u6f14\u5316\u8fc7\u7a0b\u3002\u56e2\u961f\u5229\u7528\u5206\u5b50\u675f\u5916\u5ef6\uff08MBE\uff09\u7684\u8584\u819c\u5236\u5907\u65b9\u5f0f\uff0c\u7cbe\u786e\u63a7\u5236(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub>\u7684\u5c42\u539a\u548c\u7ec4\u4efd\uff0c\u5e76\u5229\u7528\u89d2\u5206\u8fa8\u5149\u7535\u5b50\u80fd\u8c31\uff08ARPES\uff09\u548cDFT\u7406\u8bba\u8ba1\u7b97\uff0c\u5bf9\u8be5\u4f53\u7cfb\u7684\u80fd\u5e26\u7ed3\u6784\u8fdb\u884c\u4e86\u7cfb\u7edf\u5730\u7814\u7a76\uff0c\u8fdb\u4e00\u6b65\u901a\u8fc7\u5c42\u539a\u548c\u63ba\u6742\u4f5c\u4e3a\u8c03\u63a7\u624b\u6bb5\uff0c\u7814\u7a76\u4e86\u8be5\u4f53\u7cfb\u7684\u62d3\u6251\u76f8\u53d8\u884c\u4e3a\u3002<\/p>\n

\u901a\u8fc7\u6539\u53d8\u8584\u819c\u7684\u5c42\u6570\u4e0eIn\u7684\u542b\u91cf\u5b9e\u73b0\u4e86\u8584\u819c\u80fd\u5e26\u7684\u8c03\u63a7\uff0c\u5b9e\u9a8c\u548c\u7406\u8bba\u786e\u5b9a\u4e86(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub>\u8584\u819c\u7684\u51e0\u4e2a\u62d3\u6251\u76f8\u4e4b\u95f4\u7684\u6f14\u5316\u8fc7\u7a0b\uff0c\u4ee5\u53ca\u8584\u819c\u4f5c\u4e3a\u4e8c\u7ef4\u6750\u6599\u7684\u62d3\u6251\u6027\u3002\u5f53Bi2<\/sub>Se3<\/sub>\u8584\u819c\u5c42\u6570\u964d\u4f4e\u52306\u5c42\u4ee5\u4e0b\u65f6\uff0c\u5b83\u7684\u4e0a\u4e0b\u8868\u9762\u6001\u53d1\u751f\u8026\u5408\u5e76\u4f7f\u8868\u9762\u6001\u6253\u5f00\u5e26\u9699\uff0c\u4f7f\u8be5\u8584\u819c\u4ece\u4e09\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u8f6c\u53d8\u4e3a\u5177\u6709\u5e26\u9699\u8868\u9762\u6001\u7684\u4e8c\u7ef4\u7edd\u7f18\u4f53\uff1b\u968f\u7740In\u63ba\u6742\u6d53\u5ea6\u7684\u589e\u52a0\uff0c\u4f53\u7cfb\u7684\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff08SOC\uff09\u51cf\u5f31\uff0c\u53ef\u4ee5\u5b9e\u73b0(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub>\u4f53\u7cfb\u7531\u62d3\u6251\u7edd\u7f18\u4f53\u5230\u666e\u901a\u534a\u5bfc\u4f53\u7684\u8f6c\u53d8\u3002\u66f4\u91cd\u8981\u7684\u662f\uff0c\u5b9e\u9a8c\u786e\u5b9a\u4e86\u5bf9\u4e8e\u4e09\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u7684Bi2<\/sub>Se3<\/sub>\u4e8c\u7ef4\u6781\u9650\uff08\u539a\u5ea6\u5c0f\u4e8e6\u5c42\uff09\uff0c\u901a\u8fc7\u63ba\u6742In\u6539\u53d8SOC\uff0c\u4e8c\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53\u7684\u80fd\u9699\u9010\u6e10\u589e\u5927\uff0c\u89c1\u56fe3a\u548c\u56fe4a\u3002\u8be5\u5b9e\u9a8c\u7ed3\u679c\u8868\u660e\u4e86\u8fd9\u7c7b\u4e8c\u7ef4\u8584\u819c\u7684\u62d3\u6251\u5e73\u5eb8\u6027\uff0c\u8ddf\u57fa\u4e8e\u6742\u5316\u6cdb\u51fd\u7684\u7b2c\u4e00\u6027\u539f\u7406\u7406\u8bba\u8ba1\u7b97\u7ed3\u679c\u76f8\u543b\u5408\uff08\u4e0e\u4e4b\u524d\u8ba4\u4e3a\u62d3\u6251\u6027\u968f\u5c42\u6570\u53d8\u5316\u4ea7\u751f\u632f\u8361\u6027\u7684\u9884\u8a00\u4e0d\u540c\uff09\u3002\u8be5\u7ed3\u679c\u63d0\u4f9b\u4e86\u4e00\u79cd\u91c7\u7528ARPES\u5b9e\u9a8c\u8bc1\u660e\u4e8c\u7ef4\u6750\u6599\u62d3\u6251\u6027\u8d28\u7684\u65b9\u6cd5\u3002\u57fa\u4e8e\u4ee5\u4e0a\u7814\u7a76\uff0c\u6700\u7ec8\u5f62\u6210\u4e86(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub>\u8584\u819c\u4ee5\u5c42\u539a\u548cIn\u63ba\u6742\u91cf\u4e3a\u53d8\u91cf\u7684\u4e8c\u7ef4\u76f8\u56fe\u3002\u8be5\u7814\u7a76\u6210\u679c\u53d1\u8868\u5728\u56fd\u9645\u77e5\u540d\u671f\u520aNano Letters\u4e0a\uff0c\u6587\u7ae0\u9898\u76ee\u4e3a\u201cDimensional Crossover and Topological Nature of the Thin Films of a Three-Dimensional Topological Insulator by Band Gap Engineering\u201d\u3002\u6587\u7ae0\u7684\u901a\u8baf\u4f5c\u8005\u4e3a\u56fd\u9632\u79d1\u6280\u5927\u5b66\u738b\u632f\u5b87\uff08\u52a9\u7406\u7814\u7a76\u5458\uff09\uff0c\u5357\u65b9\u79d1\u6280\u5927\u5b66\u91cf\u5b50\u79d1\u5b66\u4e0e\u5de5\u7a0b\u7814\u7a76\u9662\u9648\u671d\u5b87\u526f\u7814\u7a76\u5458\u548c\u7269\u7406\u7cfb\u5218\u5947\u822a\u526f\u6559\u6388\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1 (Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub><\/strong>\u8584\u819c\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

a-c) Bi2<\/sub>Se3<\/sub>, (Bi0.4<\/sub>In0.6<\/sub>)2<\/sub>Se3<\/sub>\u548cIn2<\/sub>Se3<\/sub>\u8584\u819c\u7684\u53cd\u5c04\u5f0f\u9ad8\u80fd\u7535\u5b50\u884d\u5c04\u8c31(RHEED)\uff1b<\/p>\n

d) 4\u5c42Bi2<\/sub>Se3<\/sub>\u8584\u819c\u7684STM\u56fe\uff1b<\/p>\n

e) 16\u5c42In2<\/sub>Se3<\/sub>\u8584\u819c\u7684STM\u56fe\uff1b<\/p>\n

f) (Bi4<\/sub>In0.6<\/sub>)2<\/sub>Se3<\/sub>\u6676\u683c\u5e38\u6570\u03b1\u968fx\u542b\u91cf\u7684\u53d8\u5316\u66f2\u7ebf\u3002<\/p>\n

\u56fe<\/strong>2 <\/strong>\u4e0d\u540c<\/strong>x<\/strong>\u503c\u7684<\/strong>(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub><\/strong>\u8584\u819c\u968f\u7740\u5c42\u6570\u589e\u52a0\u7684<\/strong>\u80fd\u5e26\u7ed3\u6784\u7684\u6f14\u5316<\/strong><\/p>\n

\u00a0\"\"<\/strong><\/p>\n

\u56fe<\/strong>3 <\/strong>\u4e0d\u540c<\/strong>x<\/strong>\u503c\uff0c\u4e0d\u540c\u5c42\u6570\u7684<\/strong>(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub><\/strong>\u8584\u819c\u7684\u76f8\u7684\u6f14\u5316<\/strong><\/p>\n

\"\"<\/p>\n

\u56fe<\/strong>4 4<\/strong>\u5c42\u548c<\/strong>10<\/strong>\u5c42<\/strong>(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub><\/strong>\u8584\u819c<\/strong>\u968f\u7740<\/strong>x<\/strong>\u503c\u7684\u53d8\u5316\u7684\u80fd\u5e26\u7ed3\u6784\u6f14\u5316<\/strong><\/p>\n

\"\"<\/p>\n

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

\u7814\u7a76\u8005\u7ec6\u81f4\u5730\u7814\u7a76\u4e86(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub>\u8584\u819c\u7535\u5b66\u6027\u8d28\u968f\u7740\u5c42\u6570\u548c\u63ba\u6742\u91cfx\u503c\u7684\u53d8\u5316\u8d8b\u52bf\u3002\u7ed3\u5408\u89d2\u5206\u8fa8\u5149\u7535\u5b50\u80fd\u8c31\u5b66(ARPES)\u548cDFT\u5e26\u9699\u6f14\u5316\u5206\u6790\uff0c\u786e\u5b9a\u4e86(Bi1-x<\/sub>Inx<\/sub>)2<\/sub>Se3<\/sub>\u8584\u819c\u4ece\u4e00\u4e2a\u7279\u5b9a\u76f8\u4f4d\u5230\u53e6\u4e00\u4e2a\u5df2\u77e5\u62d3\u6251\u7684\u76f8\u4f4d\u7684\u6f14\u5316\u8fc7\u7a0b\u3002\u5229\u7528\u8584\u819c\u81ea\u8eab\u7684\u5c42\u539a\u4ee5\u53ca\u63ba\u6742\u4e0d\u540c\u539f\u5b50\u4e3a\u64cd\u7eb5\u624b\u6bb5\u662f\u7814\u7a76\u62d3\u6251\u6750\u6599\u7684\u4e00\u79cd\u5b9e\u7528\u6027\u5f3a\u7684\u65b9\u6cd5\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Dimensional Crossover and Topological Nature of the Thin Films of a Three-Dimensional Topological Insulator by Band Gap Engineering<\/a>,2019, Nano Letters, DOI\uff1a10.1021\/acs.nanolett.9b01641.<\/p>\n

\u672c\u6587\u7531\u91d1\u4e5f\u4f9b\u7a3f\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

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