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Materials<\/strong>\uff0c\u9898\u4e3a\u201c<\/strong>Stable Silicene in Graphene\/Silicene Van der Waals Heterostructures<\/strong>\u201d<\/strong>\u3002\u6587\u7ae0\u7b2c\u4e00\u4f5c\u8005\u4e3a\u7269\u7406\u6240\u674e\u66f4\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong>1. <\/strong>\u5728\u77f3\u58a8\u70ef<\/strong>\/Ru(0001)<\/strong>\u754c\u9762\u5904\u7684\u7845\u70ef\u7ed3\u6784\u5f62\u6210\u793a\u610f\u56fe<\/strong><\/p>\n \u5728\u9000\u706b\u8fc7\u7a0b\u4e2d\uff0c\u6c89\u79ef\u7684Si\u539f\u5b50\u63d2\u5165\u5230\u77f3\u58a8\u70ef\u548cRu\u57fa\u5e95\u4e4b\u95f4\u3002Si\u542b\u91cf\u8f83\u5c0f\u65f6\uff0cSi\u539f\u5b50\u5728\u9876\u90e8\u533a\u57df\u4e0b\u65b9\u5f62\u6210\u8702\u7a9d\u72b6\u7845\u70ef\u7eb3\u7c73\u8584\u7247\u3002\u968f\u7740Si\u5d4c\u5165\u7684\u589e\u52a0\uff0c\u5f62\u6210\u7845\u70ef\u5355\u5c42\u548c\u591a\u5c42\u3002<\/p>\n \u56fe<\/strong>2. <\/strong>\u7845\u70ef\u7eb3\u7c73\u8584\u7247\u7684\u5f62\u6210<\/strong><\/p>\n \uff08a\uff09STM\u5f62\u8c8c\u663e\u793aSi\u63d2\u5c42\u540e\u7684\u77f3\u58a8\u70ef\/Ru(0001)\u7ed3\u6784\u3002\u63d2\u56fe\u4e3a\uff08a\uff09\u7684\u653e\u5927\u56fe\u50cf\u3002\uff08b\uff0cc\uff09\u5206\u522b\u4e3a\u5728-0.5V\u548c-0.1V\u7684\u4e0d\u540c\u504f\u538b\u4e0b\u5728\u76f8\u540c\u533a\u57df\u5f97\u5230\u7684\u539f\u5b50\u7ea7\u5206\u8fa8\u7387\u56fe\u50cf\u3002\uff08d\uff09\u5728atop\u4f4d\u4e0b\u65b9\u63d2\u5c4226\u4e2aSi\u539f\u5b50\u7684\u539f\u5b50\u7ed3\u6784\u6a21\u578b\u3002\uff08e\uff0cf\uff09\u5206\u522b\u4e3a\uff08d\uff09\u4e2d\u7684\u6a21\u578b\u5728-0.5V\u548c-0.1V\u7684\u6837\u54c1\u504f\u538b\u4e0b\u901a\u8fc7\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u6a21\u62df\u7684STM\u56fe\u50cf\u3002<\/p>\n \u56fe<\/strong>3.<\/strong> \u5355\u5c42\u7845\u70ef\u7684\u5f62\u6210<\/strong><\/p>\n \uff08a\uff09\u5c01\u88c5\u5728\u77f3\u58a8\u70ef\u548cRu(0001)\u4e4b\u95f4\u7684\u5355\u5c42\u7845\u70ef\u7684STM\u56fe\u50cf\u3002\uff08b\uff09\u4e3a\u5b8c\u6574\u78b3\u539f\u5b50\u6676\u683c\u7684\u539f\u5b50\u5206\u8fa8\u7387\u56fe\u50cf\u3002\uff08c\uff09(7\u00d77)Ru(0001)\/(\u221a21\u00d7\u221a21)\u7845\u70ef\/(8\u00d78)\u77f3\u58a8\u70ef\u6784\u578b\u7684\u5f1b\u8c6b\u539f\u5b50\u6a21\u578b\u7684\u9876\u89c6\u56fe\u548c\u4fa7\u89c6\u56fe\uff08\u8d85\u6676\u683c\u5143\u80de\u7531\u7ea2\u8272\u83f1\u5f62\u6807\u8bb0\uff09\u3002\uff08d\uff09\uff08c\uff09\u4e2d\u6784\u578b\u7684\u7b2c\u4e00\u6027\u539f\u7406\u6a21\u62dfSTM\u56fe\u50cf\u3002<\/p>\n \u56fe<\/strong>4. <\/strong>\u77f3\u58a8\u70ef<\/strong>\/<\/strong>\u7845\u70ef\u5f02\u8d28\u7ed3\u6784\u7684\u7535\u5b50\u5c40\u57df\u51fd\u6570\uff08<\/strong>ELF<\/strong>\uff09\u8ba1\u7b97\u548c\u8f93\u8fd0\u7279\u6027<\/strong><\/p>\n 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\u672c\u9879\u7814\u7a76\u8868\u660e\uff0c\u901a\u8fc7\u7cbe\u786e\u63a7\u5236Si\u548c\u77f3\u58a8\u70ef\u4e4b\u95f4\u7684\u63d2\u5c42\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u540c\u7c7b\u578b\u7684\u77f3\u58a8\u70ef\/\u7845\u70ef\u5f02\u8d28\u7ed3\u6784\uff1a\u7845\u70ef\u7eb3\u7c73\u7247\u9635\u5217\u548c\u7845\u70ef\u5355\u5c42\u548c\u591a\u5c42\u3002STM\u8868\u5f81\u548cDFT\u6a21\u62df\u90fd\u660e\u786e\u5730\u652f\u6301\u89c2\u5bdf\u5230\u7684\u7ed3\u6784\u3002\u77f3\u58a8\u70ef\u548c\u7845\u70ef\u4e4b\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u5c5e\u4e8e\u8303\u5fb7\u74e6\u5c14\u65af\u578b\uff0c\u5982ELF\u8ba1\u7b97\u6240\u8bc1\u660e\u3002\u6240\u5c55\u793a\u7684\u8fd9\u4e9b\u7ed3\u6784\u7684\u7a7a\u6c14\u7a33\u5b9a\u6027\u5728\u5c06\u6765\u7684\u7845\u70ef\u5668\u4ef6\u5236\u9020\u4e2d\u5c06\u662f\u6709\u7528\u7684\u3002\u5bf9\u5782\u76f4\u5f02\u8d28\u7ed3\u6784\u7684\u6d4b\u91cf\u786e\u5b9e\u663e\u793a\u51fa\u660e\u786e\u5b9a\u4e49\u7684\u8096\u7279\u57fa\u6574\u6d41\u884c\u4e3a\uff0c\u8868\u660e\u751f\u957f\u7684\u77f3\u58a8\u70ef\/\u7845\u70ef\u5f02\u8d28\u7ed3\u6784\u4ee3\u8868\u4e86\u4e00\u7c7b\u65b0\u5174\u7684\u7a33\u5b9a\u548c\u529f\u80fd\u6027\u4e8c\u7ef4\u5f02\u8d28\u7ed3\u6784\u3002\u7814\u7a76\u4eba\u5458\u4e5f\u6ce8\u610f\u5230\u5236\u5907\u7684\u5f02\u8d28\u7ed3\u6784\u4ecd\u7136\u4e0e\u91d1\u5c5e\u948c\u886c\u5e95\u952e\u5408\uff0c\u8fd9\u9650\u5236\u4e86\u5176\u5b9e\u9645\u5e94\u7528\uff0c\u800c\u5728\u672a\u6765\uff0c\u8fdb\u4e00\u6b65\u5c06\u5f02\u8d28\u7ed3\u6784\u8f6c\u79fb\u5230\u7edd\u7f18\u57fa\u677f\u4e0a\u7684\u7814\u7a76\u5219\u662f\u5f88\u6709\u5fc5\u8981\u7684\u3002<\/p>\n<\/p>\n
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