{"id":157251,"date":"2018-10-26T06:12:05","date_gmt":"2018-10-25T22:12:05","guid":{"rendered":"\/\/m.iemloyee.com\/?p=157251"},"modified":"2018-10-25T14:12:49","modified_gmt":"2018-10-25T06:12:49","slug":"%e6%b8%85%e5%8d%8e%e8%96%9b%e5%85%b6%e5%9d%a4%e3%80%81%e6%9d%8e%e6%b8%ad%ef%bc%86%e5%8d%8e%e7%a7%91%e5%be%90%e5%88%9anano-letters%ef%bc%9afese%e8%96%84%e8%86%9c%e4%b8%ad%e5%90%91%e5%88%97%e7%95%b4","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=157251","title":{"rendered":"\u6e05\u534e\u859b\u5176\u5764\u3001\u674e\u6e2d\uff06\u534e\u79d1\u5f90\u521aNano letters\uff1aFeSe\u8584\u819c\u4e2d\u5411\u5217\u7574\u754c\u7684\u8fb9\u7f18\u6001"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n FeSe\u662f\u4e00\u79cd\u80fd\u591f\u5b9e\u73b0\u8d85\u5bfc\u589e\u5f3a\u3001\u62d3\u6251\u975e\u5e73\u5eb8\u8fb9\u7f18\u6001\u53ca\u62d3\u6251\u8d85\u5bfc\u7684\u65b0\u5947\u6750\u6599\uff0c\u8f7d\u6d41\u5b50\u6ce8\u5165\u548c\u6676\u683c\u7578\u53d8\u662f\u64cd\u7eb5\u5176\u7535\u5b50\u6027\u8d28\u7684\u4e24\u4e2a\u4e3b\u8981\u56e0\u7d20\u3002\u5728\u4f4e\u6e29\u4e0b\uff0c\u94c1\u57fa\u8d85\u5bfc\u4f53\u4e2d\u7535\u5b50\u7ed3\u6784\u7684\u65cb\u8f6c\u5bf9\u79f0\u6027\u88ab\u7834\u574f\uff0c\u5f62\u6210\u5411\u5217\u76f8\uff0c\u5176\u5728\u5b9e\u9a8c\u4e2d\u8868\u73b0\u4e3a\u53ef\u89c2\u6d4b\u7684\u7535\u5b50\u5404\u5411\u5f02\u6027\u3002\u5bf9\u4e8e\u5927\u90e8\u5206\u94c1\u57fa\u8d85\u5bfc\u4f53\uff0c\u8f7d\u6d41\u5b50\u63ba\u6742\u53ef\u6291\u5236\u5411\u5217\u76f8\uff0c\u4ece\u800c\u4ea7\u751f\u8d85\u5bfc\u7535\u6027\u3002\u5728\u5411\u5217\u7574\u7684\u4ea4\u754c\u5904\uff08\u7574\u754c\uff09\uff0c\u7531\u4e8e\u4e92\u76f8\u5782\u76f4\u7684\u5411\u5217\u7574\u7684\u4ea4\u53e0\uff0c\u5176\u5411\u5217\u6027\u4e5f\u88ab\u7834\u574f\u3002\u56e0\u6b64\uff0c\u7574\u754c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7814\u7a76\u7535\u5b50\u7279\u6b8a\u62d3\u6251\u6027\u8d28\u7684\u5168\u65b0\u5e73\u53f0\u3002\u53d7\u9650\u4e8e\u6837\u54c1\u5236\u5907\u548c\u7cbe\u5bc6\u6d4b\u91cf\u7b49\u65b9\u9762\uff0c\u5173\u4e8e\u7574\u754c\u4e0a\u7684\u5411\u5217\u6027\u7684\u6291\u5236\u53ca\u62d3\u6251\u7535\u5b50\u6001\u7684\u7814\u7a76\u5c1a\u672a\u62a5\u9053\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u6e05\u534e\u5927\u5b66\u674e\u6e2d\u3001\u859b\u5176\u5764\u548c\u534e\u4e2d\u79d1\u6280\u5927\u5b66\u5f90\u521a\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u7b49\u4eba\u5229\u7528\u5206\u5b50\u675f\u5916\u5ef6\u6cd5\uff08MBE\uff09\u5728STO\u886c\u5e95\u4e0a\u751f\u957f\u51fa~20UC\u7684FeSe\u8584\u819c\uff0c\u5e76\u4f7f\u7528STM\u7814\u7a76\u4e86FeSe\u8584\u819c\u4e2d\u7574\u754c\u5904\u7684\u7535\u5b50\u7ed3\u6784\u3002\u7814\u7a76\u4eba\u5458\u5728\u8d39\u7c73\u80fd\u7ea7\u5904\u89c2\u5bdf\u5230\u62d3\u6251\u8fb9\u7f18\u6001\uff0c\u5176\u8868\u73b0\u4e3a\uff1a\u5728\u7574\u754c\u4e24\u4fa7\u7a7a\u95f4\u4e0a\u5f62\u6210\u4e24\u4e2a\u6e05\u6670\u7684\u6761\u72b6\u7535\u5b50\u6001\u3002\u540c\u65f6\uff0c\u5728\u7574\u754c\u7684\u4ea4\u70b9\u5904\u53ef\u8fdb\u4e00\u6b65\u89c2\u5bdf\u5230\u9489\u624e\u5728\u8d39\u7c73\u80fd\u7ea7\u7684\u675f\u7f1a\u6001\u3002\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u8ba1\u7b97\u7406\u8bba\u5206\u6790\u5f88\u597d\u5730\u89e3\u91ca\u4e86\u8be5\u8fb9\u7f18\u6001\u7684\u62d3\u6251\u8d77\u6e90\u3002\u8be5\u53d1\u73b0\u8868\u660eFeSe\u7574\u754c\u6781\u6709\u53ef\u80fd\u662f\u5b9e\u73b0\u91cf\u5b50\u81ea\u65cb\u970d\u5c14\u6001\uff08QSH\uff09\u7684\u4e00\u79cd\u5019\u9009\u6750\u6599\uff0c\u540c\u65f6\u4e5f\u4e3a\u5728\u5355\u7ec4\u5206\u6750\u6599\u4e2d\u5b9e\u73b0\u62d3\u6251\u8d85\u5bfc\u6027\u63d0\u4f9b\u4e86\u65b0\u7684\u601d\u8def\u3002\u76f8\u5173\u6210\u679c\u4ee5\u9898\u4e3a\u201cEdge states at nematic domain walls in FeSe films<\/strong>\u201d\u53d1\u8868\u5728Nano letters<\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe\u4e00 FeSe\u7574\u754c\u5185\u5411\u5217\u6027\u7684\u6291\u5236<\/strong><\/p>\n \u56fe\u4e8c ~20 UC FeSe\/STO\u7684\u5411\u5217\u6027\u7574\u754c<\/strong><\/p>\n \u56fe\u4e09 ~20 UC FeSe\/STO\u7574\u754c\u7684\u8fb9\u7f18\u6001\u4ee5\u53ca\u7535\u5b50\u7ed3\u6784<\/strong><\/p>\n \u56fe\u56db \u7574\u754c\u4ea4\u53c9\u70b9\u7684\u675f\u7f1a\u6001<\/strong><\/p>\n \u56fe\u4e94 \u5947\u5076FeSe\u5c42\u7684\u80fd\u5e26\u7ed3\u6784\u548c\u62d3\u6251\u8fb9\u7f18\u6001<\/strong><\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n FeSe\u4e2d\u62d3\u6251\u8fb9\u7f18\u6001\u7684\u53d1\u73b0\uff0c\u4e3a\u672a\u6765\u4f4e\u529f\u8017\u7535\u5b50\u5668\u4ef6\u7684\u5f00\u53d1\u63d0\u4f9b\u4e86\u65b0\u7684\u5019\u9009\u4f53\u7cfb\u3002\u53e6\u5916\uff0c\u8fb9\u7f18\u6001\u548c\u675f\u7f1a\u6001\u7684\u7279\u5f81\u80fd\u91cf\u5747\u4f4d\u4e8e\u8d39\u7c73\u80fd\u7ea7\u5904\uff0c\u8bf4\u660e\u8be5\u4f53\u7cfb\u7684\u5316\u5b66\u52bf\u6b63\u597d\u4f4d\u4e8e\u53cd\u8f6c\u80fd\u9699\u7684\u4e2d\u5fc3\u3002\u56e0\u6b64\uff0c\u5728\u8d85\u5bfcFeSe\u8584\u819c\u4e2d\u5f15\u5165\u7574\u754c\u4e3a\u5b9e\u73b0\u62d3\u6251\u8d85\u5bfc\u63d0\u4f9b\u4e86\u65b0\u7684\u601d\u8def\uff0c\u5176\u4f18\u70b9\u4e3a\u53ef\u907f\u514d\u5f15\u5165\u63ba\u6742\u3001\u5f02\u8d28\u7ed3\u7ed3\u6784\u7b49\u590d\u6742\u6027\uff0c\u5728\u5355\u7ec4\u4efd\u6750\u6599\u4e2d\u5b9e\u73b0\u62d3\u6251\u8d85\u5bfc\u3002<\/p>\n
\n \uff08a\uff09STO\u886c\u5e95\u4e0a\u751f\u957f\u7684~20UC FeSe\u8584\u819c\u7684\u539f\u5b50\u5206\u8fa8STM\u5f62\u8c8c\u56fe\uff0c\u7531\u4e8eFeSe\u8584\u819c\u5185\u5177\u6709\u5f88\u5f3a\u7684\u5411\u5217\u6027\u4f7f\u5f97Se\u539f\u5b50\u6cbf\u7740Se-Se\u6676\u683c\u5bf9\u89d2\u7ebf\u65b9\u5411\u88ab\u660e\u663e\u62c9\u957f
\n \uff08b\uff09\u5b6a\u6676\u7574\u4e2d\u7684\u88ab\u62c9\u957f\u7684Se\u539f\u5b50\u4ee5\u53ca\u7574\u8fb9\u754c\u4e0a\u672a\u88ab\u62c9\u957f\u7684Se\u539f\u5b50<\/p>\n
\n \uff08a\uff0cb\uff09\u5411\u5217\u7574\u754c\u7684\u7535\u5b50\u6001\u5bc6\u5ea6\u7a7a\u95f4\u5206\u5e03\u56fe\u3002\u5728-50 meV\u548c70 meV\u5904\u7574\u754c\u5177\u6709\u76f8\u53cd\u7684\u5bf9\u6bd4\u5ea6\uff0c\u6a59\u8272\u7bad\u5934\u8868\u793a\u51e0\u4e2a\u7574\u754c\u7684\u4ea4\u53c9\u70b9
\n \uff08c\uff09FeSe\u8584\u819c\u7684STM\u5f62\u8c8c\u56fe\u50cf\u3002\u5982\u56fe\u4e2d\u6a59\u8272\u865a\u7ebf\u6240\u793a\uff0c\u4ea4\u53c9\u70b9\u5747\u6709\u56db\u4e2a\u7574\u754c\u7a7f\u8fc7<\/p>\n
\n \uff08a\uff09\u7574\u754c\u7684\u4e09\u7ef4STM\u5f62\u8c8c\u56fe
\n \uff08b\u3001c\uff09\u6cbf\u7740\uff08a\uff09\u4e2d\u7684\u865a\u7ebf\u7ed9\u51fa\u7a7a\u95f4\u5206\u8fa8\u7684\u5927\u80fd\u91cf\u8303\u56f4\u7684dI<\/em>\/dV<\/em>\u8c31\uff0c\u53ef\u4ee5\u770b\u5230\uff0c\u7279\u5f81\u5cf0\u5728\u7574\u754c\u533a\u57df\u5411\u4e0a\u79fb\u52a8\u4e86~35 meV
\n \uff08d\u3001e\uff09\u6cbf\u7740\uff08a\uff09\u4e2d\u7684\u865a\u7ebf\u7ed9\u51fa\u7a7a\u95f4\u5206\u8fa8\u7684\u5c0f\u80fd\u91cf\u8303\u56f4\u7684dI<\/em>\/dV<\/em>\u8c31\uff0c\u5176\u4e2d\uff0c\u57280 meV\u548c-10 meV\u51fa\u73b0\u4e24\u4e2a\u6e05\u6670\u7684\u5cf0
\n \uff08f\u3001g\uff09\u5206\u522b\u4e3a-10 meV\u548c0 meV\u5904\u7684\u7535\u5b50\u6001\u5bc6\u5ea6\u7684\u7a7a\u95f4\u5206\u5e03\u3002\u626b\u63cf\u533a\u57df\u548c\uff08a\uff09\u4e00\u81f4\u3002\uff08g\uff09\u5c55\u793a\u4e86\u6e05\u6670\u7684\u8fb9\u7f18\u6001<\/p>\n
\n \uff08a\u3001b\uff09\u56fe1c\u4e2d\u4ea4\u53c9\u70b9\u7535\u5b50\u6001\u5bc6\u5ea6\u5206\u5e03\u56fe\u3002\u4ea4\u53c9\u70b9\u5904\u7684\u675f\u7f1a\u6001\u5728\uff08a\uff09\u4e2d\u6e05\u6670\u53ef\u89c1\uff08\u767d\u8272\u7bad\u5934\uff09
\n \uff08c\uff09\u4ea4\u70b9\u5904\u7684dI<\/em>\/dV<\/em>\u8c31<\/p>\n
\n \uff08a\u3001b\uff09\u5206\u522b\u8868\u793a\u5355\u5c42\u548c\u53cc\u5c42FeSe\u7684\u8ba1\u7b97\u5e26\u7ed3\u6784\uff0c\u7ea2\u8272\u83f1\u5f62\u8868\u793aFe\u539f\u5b50\u7684dyz<\/sub>\/dxz<\/sub><\/em>\u8f68\u9053\u7684\u80fd\u5e26\u6295\u5f71\u56fe\uff0c\u84dd\u8272\u5708\u8868\u793adz2<\/sup><\/sub><\/em>\u8f68\u9053
\n \uff08c\u3001d\uff09\u5206\u522b\u8868\u793a\u5355\u5c42\u548c\u53cc\u5c42FeSe\u6cbf\u7740\uff08110\uff09\u65b9\u5411\u7684\u62d3\u6251\u8fb9\u7f18\u6001\u3002\u5728\u5b9e\u9a8c\u4e2d\uff0c\u5947\u6570\u548c\u5076\u6570\u8584\u819c\u4e2d\u5747\u89c2\u6d4b\u5230\u4e86\u6e05\u6670\u7684\u62d3\u6251\u8fb9\u7f18\u6001\uff0c\u4f46\u5176\u62d3\u6251\u8d77\u6e90\u662f\u4e0d\u540c\u7684\u3002\u5176\u4e2d\uff0c\u5947\u6570\u5c42\u7684\u62d3\u6251\u6027\u53d7\u65f6\u95f4\u53cd\u6f14\u548c\u53cd\u94c1\u78c1\u57fa\u6001\u4fdd\u62a4\uff0c\u800c\u5076\u6570\u5c42\u7684\u62d3\u6251\u6027\u53d7\u6ed1\u79fb\u955c\u9762\u5bf9\u79f0\u6027\u4fdd\u62a4<\/p>\n