{"id":27060,"date":"2016-07-16T08:00:26","date_gmt":"2016-07-16T00:00:26","guid":{"rendered":"\/\/m.iemloyee.com\/?p=27060"},"modified":"2016-07-16T16:05:49","modified_gmt":"2016-07-16T08:05:49","slug":"science%ef%bc%9a%e6%b8%85%e5%8d%8e%e5%a4%a7%e5%ad%a6%e5%8f%91%e7%8e%b0%e4%ba%8c%e7%bb%b4%e5%8f%97%e9%99%90sete%e8%96%84%e8%86%9c%e7%9a%84%e5%bc%ba%e9%93%81%e7%94%b5%e7%89%b9%e6%80%a7","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=27060","title":{"rendered":"Science\uff1a\u6e05\u534e\u5927\u5b66\u53d1\u73b0\u4e8c\u7ef4\u53d7\u9650SnTe\u8584\u819c\u7684\u5f3a\u94c1\u7535\u7279\u6027"},"content":{"rendered":"
\u3010\u6458\u8981<\/b>\u3011<\/p>\n
\u8fd1\u65e5\uff0c\u6e05\u534e\u5927\u5b66\u7269\u7406\u7cfb\u5728\u94c1\u7535\u6027\u7814\u7a76\u4e2d\u83b7\u5f97\u65b0\u8fdb\u5c55\u3002\u7531\u9648\u66e6\u6559\u6388\u3001\u5b63\u5e05\u534e\u52a9\u7406\u6559\u6388<\/strong>\u4e3a\u901a\u8baf\u4f5c\u8005\u7684\u6587\u7ae0\u201cDiscovery of robust in-planeferroelectricity in atomic-thick SnTe\u201d\u4e8e7\u670815\u65e5\u5728\u9876\u7ea7\u671f\u520aScience\u4e0a\u53d1\u8868\u3002<\/p>\n \u6587\u4e2d\uff0c\u4f5c\u8005\u5bf9\u539f\u5b50\u7ea7\u539a\u5ea6\u7684\u78b2\u5316\u9521\uff08SnTe\uff09\u8584\u819c\u7684\u6676\u683c\u7ed3\u6784\u548c\u94c1\u7535\u6027\u8fdb\u884c\u4e86\u7814\u7a76\uff0c\u53d1\u73b0\u4e86\u5355\u4e00\u76841\u4e2a\u6676\u80de\uff081-unit cell\uff0c\u53731-UC\uff09\u7684\u9650\u5236\u4e2d\u7684\u4e00\u79cd\u7a33\u5b9a\u7684\u81ea\u53d1\u7684\u6781\u5316\u3002\u8fdb\u4e00\u6b65\u7814\u7a76\u53d1\u73b0\uff0c1-UC SnTe\u8584\u819c\u7684\u94c1\u7535\u6027\u8f6c\u53d8\u6e29\u5ea6Tc\uff0c\u53ef\u4ece\u672c\u4f53\u768498K\u663e\u8457\u589e\u52a0\u5230\u4e86270K\u3002\u6b64\u5916\uff0c\u57282-UC\u52304-UC SnTe\u8584\u819c\u5728\u5ba4\u6e29\u4e0b\u4fbf\u53ef\u8868\u73b0\u51fa\u5f3a\u70c8\u7684\u94c1\u7535\u6027\u3002\u4f5c\u8005\u8ba4\u4e3a\uff0c\u8fd9\u79cd\u4e8c\u7ef4\u6750\u6599\u7684\u534a\u5bfc\u4f53\u6027\u548c\u94c1\u7535\u6027\u7684\u76f8\u4e92\u4f5c\u7528\uff0c\u4f7f\u5176\u5728\u8bf8\u5982\u975e\u6613\u5931\u6027\u9ad8\u5bc6\u5ea6\u5b58\u50a8\u3001\u7eb3\u7c73\u4f20\u611f\u5668\u548c\u7535\u5b50\u5de5\u4e1a\u7b49\u9886\u57df\u5c06\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002<\/p>\n \u3010\u56fe\u6587\u8be6\u89e3<\/strong>\u3011<\/p>\n \u56fe1 \u00a0SnTe\u8584\u819c\u7684\u7ed3\u6784\u53ca\u6676\u683c\u7578\u53d8<\/strong><\/p>\n (A)<\/strong> SnTe\u6676\u4f53\u7ed3\u6784\uff08\u4e0a\uff09\u548cSnTe\u8584\u819c\uff08\u4e0b\uff09\u7684\u539f\u7406\u56fe\uff1b \u56fe2 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\u8be5\u5668\u4ef6\u7684\u7ed3\u6784\u793a\u610f\u56fe\uff1aVr\u548cVw\u5206\u522b\u662f\u8bfb\u53d6\u548c\u5199\u5165\u7535\u538b\uff0cIt\u662f\u96a7\u9053\u7535\u6d41\uff1b \u3010\u5c0f\u7ed3<\/strong>\u3011<\/p>\n \u4f5c\u8005\u4f7f\u7528\u5206\u5b50\u675f\u5916\u5ef6\u6280\u672f\u5236\u5907\u4e86\u539f\u5b50\u7ea7\u539a\u5ea6\u7684\u94c1\u7535\u6027SnTe\u8584\u819c\uff0c\u5e76\u7814\u7a76\u4e86\u8584\u819c\u7684\u5fae\u89c2\u7ed3\u6784\u548c\u6676\u683c\u7578\u53d8\u7b49\u4fe1\u606f\u3002\u5e76\u8fdb\u4e00\u6b65\u7814\u7a76\u4e86\u81ea\u53d1\u6781\u5316\u548c\u6761\u72b6\u7574\u7ed3\u6784\u5bf9\u80fd\u5e26\u7684\u5f71\u54cd\u53ca\u5f7c\u6b64\u7684\u5185\u5728\u8054\u7cfb\u3002\u6b64\u5916\uff0c\u4f5c\u8005\u91cd\u70b9\u7814\u7a76\u4e86\u94c1\u7535\u6027\u8f6c\u53d8\u6e29\u5ea6\uff08Tc\uff09\u7684\u5f71\u54cd\u56e0\u7d20\u4ee5\u53ca\u57281-4 UC SnTe\u8584\u819c\u4e2d\u7684\u4e0d\u540c\uff0c\u5e76\u4e14\u5b9e\u73b0\u4e86Tc\u7684\u5927\u5e45\u63d0\u9ad8\uff0c\u4f8b\u59824-UC\u8584\u819c\u5728\u5ba4\u6e29\u4e0b\u5373\u53ef\u8868\u73b0\u51fa\u5f3a\u94c1\u7535\u6027\u3002\u4f5c\u8005\u8fd8\u5229\u7528\u8fd9\u4e9b\u6027\u8d28\u6784\u601d\u4e86\u4e00\u79cd\u5177\u6709\u975e\u6613\u5931\u6027\u7684\u9ad8\u5bc6\u5ea6\u5b58\u50a8\u5668\u4ef6\uff0c\u5e76\u6a21\u62df\u4e86\u8bfb\u53d6\u548c\u5199\u5165\u7684\u8fc7\u7a0b\u3002\u8be5\u7814\u7a76\u5de5\u4f5c\u96be\u5ea6\u4e4b\u4e00\u5728\u4e8e\uff0c\u8d85\u8584\u8584\u819c\uff08\u4e00\u4e2a\u6216\u51e0\u4e2a\u539f\u5b50\u539a\u5ea6\uff09\u7684\u94c1\u7535\u7279\u6027\u4fe1\u53f7\u4e0e\u672c\u4f53\u94c1\u7535\u6027\u76f8\u6bd4\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u8870\u51cf\u5341\u5206\u660e\u663e\uff0c\u56e0\u6b64\uff0c\u4f5c\u8005\u91c7\u7528\u4e86\u626b\u63cf\u96a7\u7a7f\u80fd\u8c31\uff08STS\uff09\u548c\u626b\u63cf\u96a7\u9053\u663e\u5fae\u955c\uff08STM\uff09\u6765\u63a2\u6d4b\u4e8c\u7ef4\u53d7\u9650\u4e0b\u7684SeTe\u8584\u819c\u7684\u94c1\u7535\u7279\u6027\uff0c\u5e76\u5f97\u5230\u591a\u65b9\u9762\uff08\u5982\u7574\u7ed3\u6784\u7684\u5efa\u7acb\u3001\u6676\u683c\u7578\u53d8\u3001\u80fd\u5e26\u5f2f\u66f2\u3001\u6781\u5316\u8c03\u63a7\u7b49\uff09\u7684\u6570\u636e\u6765\u7814\u7a76\u94c1\u7535\u6027\u3002<\/p>\n \u6587\u732e\u539f\u6587\u94fe\u63a5\uff1aDiscovery of robust in-planeferroelectricity in atomic-thick SnTe<\/a>\uff08Science\uff0c2016\uff0cDOI: 10.1126\/science.aad8609\uff09<\/p>\n \u672c\u6587\u7531\u7cef\u7c73\u63d0\u4f9b\u7d20\u6750\uff0c\u674e\u5353\u6574\u7406\u7f16\u8bd1\u3002<\/p>\n \u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u3010\u6458\u8981\u3011 \u8fd1\u65e5\uff0c\u6e05\u534e\u5927\u5b66\u7269\u7406\u7cfb\u5728\u94c1\u7535\u6027\u7814\u7a76\u4e2d\u83b7\u5f97\u65b0\u8fdb\u5c55\u3002\u7531\u9648\u66e6\u6559\u6388\u3001\u5b63\u5e05\u534e\u52a9\u7406\u6559\u6388\u4e3a\u901a\u8baf\u4f5c\u8005\u7684\u6587\u7ae0\u201cDiscovery of robust in-planefe…<\/p>\n","protected":false},"author":22,"featured_media":27061,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215,2],"tags":[155,32],"class_list":["post-27060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jiedu","category-keji","tag-science","tag-film"],"_links":{"self":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/27060"}],"collection":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27060"}],"version-history":[{"count":10,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/27060\/revisions"}],"predecessor-version":[{"id":27131,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/27060\/revisions\/27131"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/media\/27061"}],"wp:attachment":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27060"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/p>\n
\n(B)<\/strong> SnTe\u8584\u819c\u7684\u7684\u626b\u9762\u96a7\u9053\u663e\u5fae\u955c\uff08STM\uff09\u56fe\u50cf\uff0c\u7ea2\u8272\u865a\u7ebf\u4e3a\u57fa\u5e95\u7684\u53f0\u9636\uff1b
\n(C)<\/strong> \u57284.7K\u65f61-UC\u8584\u819c\u8868\u9762\u7684dI\/dV\u8c31\u56fe\uff1a\u5bfc\u5e26\u548c\u4ef7\u5e26\u7684dI\/dV\u5728\u5f3a\u5ea6\u4e0a\u5dee\u522b\u660e\u663e\uff0c\u7bad\u5934\u6807\u660e\u4e86\u4ef7\u5e26\u548c\u5bfc\u5e26\u7684\u8fb9\u7f18\uff0c1.5V\u5904\u7684\u5cf0\u76f8\u5f53\u4e8e\u5bfc\u5e26\u4e2d\u7684\u8303\u970d\u592b\u5947\u70b9\uff1b
\n(D)<\/strong> \u00a01-UC SnTe\u8584\u819c\u7684\u6761\u72b6\u7574\uff1a\u6bcf\u4e2a\u6761\u72b6\u7574\u4e2d\u7684\u7bad\u5934\u6807\u660e\u4e86\u6676\u683c\u7578\u53d8\u7684\u65b9\u5411\uff0c\u4e0a\u90e8\u63d2\u56fe\u4e3a\u4e00\u4e2a\u6761\u72b6\u7574\u8fb9\u754c\u7684\u5f62\u8c8c\u56fe\uff1b\u4e0b\u90e8\u63d2\u56fe\u4e3a\u77f3\u58a8\u70ef\u57fa\u5e95\uff1b
\n(E)<\/strong> \u7a7f\u8fc7\u6761\u72b6\u7574\u8fb9\u754c\u533a\u57df\u7684\u5085\u91cc\u53f6\u53d8\u6362\uff08\u5de6\uff09\uff0c\u5e03\u62c9\u683c\uff08Braggart\uff09\u5cf0\u4e0eTe\u4e9a\u6676\u683c\u6709\u5173\uff0c\u63d2\u56fe\u4e2d\u7684\u5e73\u884c\u7ebf\u8868\u660e\u4e86\u5728\u6bcf\u4e2a\u7574\u57df\u4e2d\u7684\u83ab\u5c14\u6761\u7eb9\uff08moir\u00e9 stripes\uff09\uff1b
\n(F)<\/strong> \u94c1\u7535\u76f8\u7684\u6676\u683c\u7578\u53d8\u548c\u539f\u5b50\u4f4d\u79fb\u7684\u539f\u7406\u793a\u610f\u56fe\uff0c\u5b9e\u7ebf\u6807\u51fa\u4e86\u5ca9\u76d0\u6676\u80de\uff0c\u865a\u7ebf\u6807\u51fa\u4e86Te\u4e9a\u6676\u683c\u7684\u539f\u59cb\u6676\u80de\uff0c\u7bad\u5934\u6307\u5411\u7578\u53d8\u65b9\u5411\u3002<\/p>\n<\/p>\n
\n(B)<\/strong> \u8fb9\u7f18\u7684\u8868\u89c2\u9ad8\u5ea6\uff1a\u5982\u679c\u8fb9\u7f18\u5e26\u8d1f\u7535\u8377\uff0cFermi level\uff08\u8d39\u7c73\u80fd\u7ea7\uff0cEF\uff09\u548c\u504f\u538b\uff08eVs\uff09\u4e4b\u95f4\u6709\u66f4\u8fc7\u7684\u72b6\u6001\u5bf9\u96a7\u7a7f\u6548\u5e94\u6709\u6548\uff0c\u56e0\u6b64\uff0cSTM\u9488\u5c16\u5fc5\u987b\u62ac\u8d77\u4ee5\u4fdd\u6301\u5728\u626b\u63cf\u8fc7\u7a0b\u4e2d\u6052\u5b9a\u7684\u7535\u6d41\uff0c\u4ece\u800c\u5f97\u5230\u66f4\u9ad8\u7684\u8868\u89c2\u9ad8\u5ea6\uff1b\u5e26\u6b63\u7535\u8377\u7684\u8fb9\u7f18\u6709\u7740\u76f8\u53cd\u7684\u8d8b\u52bf\uff1b
\n(C)<\/strong> \u53f3\u8fb9\u8c31\u56fe\u5206\u522b\u662f\u6cbf\u5de6\u4fa7\u56fe\u4e2d\u7bad\u5934\u6240\u6307\u7684\u65b9\u5411\u83b7\u5f97\u7684dI\/dV\u8c31\u56fe\uff1b
\n(D)<\/strong> 1-UC\u5355\u7574\u6d77\u5c9b\u7ed3\u6784\u7684STM\u56fe\u50cf\uff1a\u7ed3\u679c\u8868\u660e\u6781\u5316\u662f\u6cbf[110]\u65b9\u5411\uff1b\u8be5\u56fe\u67099\u4e2a\u66f4\u5c0f\u7684\u626b\u9762\u56fe\u6784\u6210\uff0c\u8fb9\u7f18\u7684\u201c+\u201d \u201c-\u201d\u7b26\u53f7\u8868\u793a\u6b63\u8d1f\u6781\u5316\u7535\u8377\uff1b
\n(E)<\/strong> \u52a0\u8f7d5V\u7535\u538b\u8109\u51b250ms\u524d\uff08\u4e0a\u90e8\u56fe\uff09\u540e\uff08\u4e0b\u90e8\u56fe\uff09\uff0c1-UC\u8584\u819c\u76f8\u540c\u533a\u57df\u7684\u5f62\u8c8c\u56fe\u3002\u7bad\u5934\u6807\u660e\u4e86\u6781\u5316\u65b9\u5411\u3002<\/p>\n<\/p>\n
\n(B)<\/strong> \u7528\u5e42\u6b21\u5b9a\u5f8b\u62df\u54081-UC SnTe\u8584\u819c\u5728Tc\u9644\u8fd1\u7684\u6570\u636e\uff1b\u7ea2\u8272\u692d\u5706\u5f62\u865a\u7ebf\u8fa8\u660e\u4e86\u7ebf\u6027\u62df\u5408\u7684\u6570\u636e\u70b9\uff1b
\n(C)<\/strong> \u5728\u589e\u957f\u5230450K\u7684\u6e29\u5ea6\u65f6\uff0cSn\u7a7a\u4f4d\u5bc6\u5ea6\u7684\u539a\u5ea6\u4f9d\u8d56\u6027\uff1b
\n(D)<\/strong> \u7531\u5b9e\u9a8c\u6d4b\u5f97\u548cDFT\u8ba1\u7b97\u800c\u5f97\u7684\u7535\u5b50\u5e26\u9699\u539a\u5ea6\u4f9d\u8d56\u6027\uff1b\u4e24\u8005\u4e4b\u95f4\u7684\u5dee\u5f02\u662f\u7531\u4e8eDFT\u65b9\u6cd5\u4e2d\u5bf9\u5e26\u9699\u7684\u4f30\u503c\u8fc7\u4f4e\uff1b
\n(E)<\/strong> \u901a\u8fc7\u5b9e\u9a8c\u6570\u636e\u548cDFT\u8ba1\u7b97\u800c\u51b3\u5b9a\u7684\u6676\u683c\u5e38\u6570\u7684\u539a\u5ea6\u4f9d\u8d56\u6027\u3002<\/p>\n<\/p>\n
\n(B)<\/strong> \u94c1\u7535\u6027\u8584\u819c\u548c\u4e0a\u7ea7\u677f\u4e4b\u95f4\u7684\u96a7\u7a7f\u8fc7\u7a0b\u7684\u80fd\u5e26\u56fe\uff1a\u03bc\u662f\u8584\u819c\u7684\u5316\u5b66\u52bf\uff0c\u5bf9\u5e26\u6b63\u7535\uff08\u8d1f\u7535\uff09\u7684\u72b6\u6001\uff0c\u9700\u8981\u8fbe\u5230\u9608\u503c\u7535\u538bVR\u624d\u80fd\u6fc0\u53d1\u4e0a\u90e8\u7535\u6781\u677f\u548c\u8fb9\u7f18\u5bfc\u5e26\u4e4b\u95f4\u7684\u96a7\u7a7f\u901a\u9053\uff1b
\n(C)<\/strong> \u7531STM\u6d4b\u5f97\u7684\u9608\u503c\u7535\u538b\uff1b
\n(D)<\/strong> \u7528STM\u6a21\u62df\u57283-UC\u8584\u819c\u4e0a\u7684\u5199\u5165\u8fc7\u7a0b\uff1a\u5f53\u9488\u5c16\u4ece\u4e00\u4e2a\u8fb9\u7f18\u79fb\u52a8\u5230\u91cc\u4e00\u4e2a\u65f6\uff0cSTM\u7684\u53cd\u9988\u56de\u8def\u5173\u95ed\u6709\uff0c\u4ee5\u7ef4\u6301\u96a7\u7a7f\u7ed3\u4e4b\u95f4\u76f8\u540c\u7684\u8ddd\u79bb\uff1b
\n(E)<\/strong> 3-UC\u8584\u819c\u7684\u5f00\/\u5173\u6bd4\u7387\u7684\u504f\u538b\u4f9d\u8d56\u6027\uff0c\u6570\u636e\u6765\u81ea\u4e8e\u56fe4 -D\u3002<\/p>\n