{"id":84763,"date":"2017-06-08T06:30:07","date_gmt":"2017-06-07T22:30:07","guid":{"rendered":"\/\/m.iemloyee.com\/?p=84763"},"modified":"2017-06-06T13:17:31","modified_gmt":"2017-06-06T05:17:31","slug":"science%ef%bc%9a%e5%9f%ba%e4%ba%8e%e7%8e%af%e5%bd%a2%e7%9f%b3%e5%a2%a8%e7%83%af%e8%b0%90%e6%8c%af%e5%99%a8%e4%b8%ad%e7%9a%84%e5%87%a0%e4%bd%95%e7%9b%b8%e4%bd%8d%e5%bc%80%e5%85%b3","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=84763","title":{"rendered":"Science\uff1a\u57fa\u4e8e\u73af\u5f62\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u4e2d\u7684\u51e0\u4f55\u76f8\u4f4d\u5f00\u5173"},"content":{"rendered":"<p><strong>\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n<p>\u51e0\u4f55\u76f8\u4f4d\u901a\u5e38\u88ab\u63cf\u8ff0\u4e3a\u201c\u6ca1\u6709\u5c40\u90e8\u53d8\u5316\u7684\u5168\u5c40\u53d8\u5316\u201d\u7684\u73b0\u8c61\u7684\u7ed3\u679c\u3002\u4f17\u6240\u5468\u77e5\u7684\u7ecf\u5178\u4f8b\u5b50\u662f\u5728\u66f2\u9762\u4e0a\u77e2\u91cf\u7684\u5e73\u884c\u4f20\u8f93\uff0c\u5373\u7ecf\u8fc7\u66f2\u9762\u4e0a\u4e00\u4e2a\u5c01\u95ed\u8def\u5f84\u540e\uff0c\u56de\u5230\u539f\u70b9\u5904\u7684\u77e2\u91cf\u6307\u5411\u4e0d\u540c\u65b9\u5411\uff0c\u5c06\u8fd9\u79cd\u53e4\u5178\u73b0\u8c61\u6269\u5c55\u5230\u91cf\u5b50\u9886\u57df\uff0c\u8bde\u751f\u4e86Berry phase\u3002\u7cfb\u7edf\u53c2\u6570\u56f4\u7ed5\u5c01\u95ed\u8def\u5f84\u5faa\u73af\u540e\uff0c\u91cf\u5b50\u72b6\u6001\u7684\u76f8\u4f4d\u4e0d\u4f1a\u56de\u590d\u5230\u5176\u539f\u59cb\u503c\uff0c\u7136\u800c\u6ce2\u51fd\u6570\u4f1a\u83b7\u5f97\u4e00\u4e2a\u53ef\u6d4b\u91cf\u7684\u76f8\u4f4d\u5dee\uff0c\u8be5\u76f8\u4f4d\u5dee\u88ab\u79f0\u4e3a\u51e0\u4f55\u76f8\u4f4d\uff08Berry phase\uff09\u3002<\/p>\n<p><strong>\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n<p>\u8fd1\u65e5\uff0c<strong>\u7f8e\u56fd\u56fd\u5bb6\u6807\u51c6\u4e0e\u6280\u672f\u7814\u7a76\u6240<\/strong><strong>Joseph A. Stroscio<\/strong><strong>\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09\u56e2\u961f<\/strong>\u7814\u7a76\u53d1\u73b0\uff0c\u901a\u8fc7\u901a\u8fc7\u7279\u6b8a\u7684\u51e0\u4f55\u76f8\u4f4d\u53ef\u4ee5\u8bf1\u5bfc\u51fa\u4e00\u4e9b\u6709\u8da3\u7684\u5149\u8c31\u7279\u5f81\uff1a\u5728\u76f8\u5bf9\u8f83\u5c0f\u7684\u4e34\u754c\u78c1\u573a\u60c5\u51b5\u4e0b\uff0c\u73af\u5f62\u77f3\u58a8\u70efP-N\u7ed3\u5171\u632f\u5668\u7684\u89d2\u52a8\u91cf\u7684\u80fd\u91cf\u4f1a\u7a81\u7136\u5927\u5e45\u589e\u52a0\u3002\u8fd9\u79cd\u73b0\u8c61\u6e90\u4e8e\u03c0\u51e0\u4f55\u76f8\u4f4d\u7684\u53d8\u5316\uff0c\u540c\u65f6\u4e5f\u548c\u77f3\u58a8\u70ef\u4e2d\u7684\u72c4\u62c9\u514b\u8d39\u7c73\u5b50\u7684\u62d3\u6251\u6027\u8d28\u6709\u5173\u3002\u51e0\u4f55\u76f8\u4f4d\u53ef\u4ee5\u5728\u5f88\u5c0f\u7684\u78c1\u573a\u8c03\u63a7\u53d8\u5316\u4e0b\u63a7\u5236\u548c\u5207\u6362\u5f00\u5173\u72b6\u6001\uff0c\u8fd9\u4e5f\u4e3a\u672a\u6765\u77f3\u58a8\u70ef\u5149\u7535\u5668\u4ef6\u7684\u5e94\u7528\u5960\u5b9a\u4e86\u4e00\u5b9a\u7684\u57fa\u7840\u3002<\/p>\n<p><strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011\u3002<\/strong><\/p>\n<p><strong>\u56fe<\/strong><strong>1<\/strong><strong>\u56de\u97f3\u58c1\u6a21\u5f0f\u4e0b\u73af\u5f62\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u52a8\u529b\u5b66<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84772 aligncenter\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/1-5.jpg\" alt=\"\" width=\"700\" height=\"518\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/1-5.jpg 700w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/1-5-300x222.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" 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loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84773 aligncenter\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/2-3.jpg\" alt=\"\" width=\"700\" height=\"709\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/2-3.jpg 700w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/2-3-296x300.jpg 296w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>\u56fe\uff08A\uff09B\u56fe\u4e2d\u73af\u5f62\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u7535\u52bf\u5206\u5e03<\/p>\n<p>\u56fe\uff08B\uff09\u4e2d\u5fc3\u533a\u57dfP\u578b\u63ba\u6742\uff0c\u80cc\u666f\u533a\u57dfN\u578b\u63ba\u6742\u7684\u77f3\u58a8\u70ef\u7684\u73af\u5f62\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u7ed3\u6784\u793a\u610f\u56fe<\/p>\n<p>\u56fe\uff08C\uff09\u8ba1\u7b97\u5728\u540c\u4e00\u4e2a\u629b\u7269\u52bf\u4e0b\uff0c\u4e0d\u540c\u6807\u5b9a\u7684\u72b6\u6001\u4e0b\u73af\u5f62\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u53c2\u6570\u8ba1\u7b97\u4eff\u771f<\/p>\n<p>\u56fe\uff08D\uff09\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u5dee\u5206\u7535\u5bfc\u56fe\uff0c\u5f84\u5411\u7a7a\u95f4\u4f4d\u7f6e\u662f\u4ece\u5149\u8c31XY\u8f74\u7684\u89d2\u5ea6\u5e73\u5747\u503c\u4e2d\u83b7\u5f97<\/p>\n<p><strong>\u56fe<\/strong><strong>3 <\/strong><strong>\u73af\u5f62\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u51e0\u4f55\u76f8\u4f4d\u5f00\u5173\u72b6\u6001\u5207\u6362<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84774 aligncenter\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/3-3.jpg\" alt=\"\" width=\"700\" height=\"322\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/3-3.jpg 700w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/3-3-300x138.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>\u56fe\uff08A\uff09\u5dee\u5206\u96a7\u9053\u7535\u5bfc\u56fe\uff0c\u6a2a\u8f74\u662f\u5728\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u4e2d\u5fc3\u6d4b\u91cf\u7684\u78c1\u573a<\/p>\n<p>\u56fe\uff08B\uff09\u4eff\u771f\u8ba1\u7b97\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684LDOS<\/p>\n<p>\u56fe\uff08C\uff09n=4\u65f6\u7684\u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u78c1\u573a\u5206\u5e03<\/p>\n<p>\u56fe\uff08D\uff09n=4\u65f6\uff0c\u78c1\u573a\u5206\u5e03m=\u00b11\/2\u72b6\u6001\u4e0b\u7684\u80fd\u91cf\u5dee\u522b<\/p>\n<p><strong>\u56fe<\/strong><strong>4 <\/strong><strong>\u9ad8\u89d2\u52a8\u91cf\u72b6\u6001\u4e0b\u51e0\u4f55\u76f8\u4f4d\u7684\u5207\u6362<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84775 aligncenter\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/4-3.jpg\" alt=\"\" width=\"700\" height=\"274\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/4-3.jpg 700w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/06\/4-3-300x117.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>\u56fe\uff08A\uff09 \u77f3\u58a8\u70ef\u8c10\u632f\u5668\u7684\u5dee\u5206\u96a7\u9053\u7535\u5bfc\u56fe\uff0c\u6a2a\u8f74\u662f\u78c1\u573a\uff0c\u6d4b\u91cf\u4f4d\u4e8e\u8ddd\u79bb\u4e2d\u5fc370nm\u7684\u533a\u57df<\/p>\n<p>\u56fe\uff08B\uff0cC\uff0cD\uff09\u8ba1\u7b97\u4eff\u771f\u77f3\u58a8\u70ef\u6240\u6709m\u72b6\u6001\uff08B\uff09\uff0cm=\u00b11\/2\u72b6\u6001\uff08C\uff09\uff0cm=+3\/2\u72b6\u6001\u4e0b\uff08D\uff09\u7684LDOS-\u78c1\u573a\u7684\u5173\u7cfb\u56fe<\/p>\n<p><strong>\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n<p>\u8be5\u5b9e\u9a8c\u6210\u679c\u53ef\u4ee5\u5e94\u7528\u5728\u592a\u8d6b\u5179\u9891\u7387\u4e0b\uff0c\u9ad8\u7cbe\u5ea6\u7684\u87ba\u65cb\u654f\u611f\u7684\u5149\u7535\u6d4b\u91cf\uff0c\u53ef\u4ee5\u901a\u8fc7\u78c1\u573a\u7684\u5c0f\u8303\u56f4\u53d8\u5316\u6765\u5f00\u5173\u692d\u5706\u504f\u632f\u5149\u4fe1\u53f7\u3002\u901a\u8fc7\u5c06\u4e0d\u540c\u7684P-N\u7ed3\u7684\u5236\u9020\u5de5\u827a\u548c\u5728\u77f3\u58a8\u70ef\u5f02\u8d28\u7ed3\u6784\u63ba\u6742\u6c2e\u5316\u787c\u5f62\u6210\u9759\u7535\u8fb9\u754c\u6280\u672f\u76f8\u7ed3\u5408\uff0c\u8fd9\u5c06\u4f1a\u6269\u5927\u57fa\u4e8e\u77f3\u58a8\u70ef\u7684\u5149\u7535\u5668\u4ef6\u7684\u7814\u7a76\u4e0e\u5e94\u7528\u3002<\/p>\n<p><strong>\u6587\u732e\u94fe\u63a5\uff1a<a href=\"http:\/\/science.sciencemag.org\/content\/356\/6340\/845\" target=\"_blank\" rel=\"noopener noreferrer\">An on\/off Berry phase switch in circular graphene resonators<\/a><\/strong>\uff08Science, 2017, DOI: 10.1126\/science.aal0212\uff09<\/p>\n<p>\u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4hxxurui\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n<p>\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\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<a href=\"\/\/m.iemloyee.com\/25127.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8<\/a>\u3002\u5982\u679c\u4f60\u5bf9\u7535\u5b50\u6750\u6599\u611f\u5174\u8da3\uff0c\u613f\u610f\u4e0e\u7535\u5b50\u7535\u5de5\u9886\u57df\u4eba\u624d\u4ea4\u6d41\uff0c\u8bf7\u52a0\u5165\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u6750\u6599\u5b66\u4e60\u5c0f\u7ec4\uff08QQ\u7fa4\uff1a482842474\uff09\u3002\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<p><strong>\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<a href=\"http:\/\/www.ceshigu.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u6d4b\u8bd5\u8c37<\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u5f15\u8a00\u3011 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