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anomalous Hall octet driven by orbital magnetism in bilayer graphene\u201d\u53d1\u8868\u5728\u4e86nature\u4e0a\u3002<\/b><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-228217\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-161.png\" alt=\"\" width=\"600\" height=\"336\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-161.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-161-300x168.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>\u56fe\u6587\u89e3\u6790<\/b><\/strong><\/p>\n<p><strong style=\"line-height: 1.5;\"><b>\u4e00\u3001QAH\u76f8<\/b><\/strong><strong style=\"line-height: 1.5;\"><b>\u3002<\/b><\/strong><\/p>\n<p>\u672c\u5de5\u4f5c\u5229\u7528\u4e0d\u542b\u7535\u5b50\u6d3b\u6027\u7574\u58c1\u7684\u53cc\u5c42\u77f3\u58a8\u70ef\u7247\u5c42\u548c\u5df2\u5efa\u7acb\u7684\u5de5\u827a\uff0c\u5236\u5907\u4e86\u60ac\u6d6e\u53cc\u6805\u53cc\u5c42\u7ed3\u6784\u77f3\u58a8\u70ef\u5668\u4ef6\u3002\u5728\u96f6\u78c1\u573a\u4e0b\u626b\u8fc7\u9876\u90e8\u548c\u5e95\u90e8\u6805\u6781\u7535\u538b<em><i>V<\/i><\/em><em><sub><i>t<\/i><\/sub><\/em>\u548c<em><i>V<\/i><\/em><em><sub><i>b<\/i><\/sub><\/em>\uff0c\u5f97\u5230\u4e86\u5fae\u5206\u7535\u5bfc\u56fe\uff0c\u5305\u62ec\u5c42\u95f4\u7535\u573a\u8bf1\u5bfc\u7684\u7edd\u7f18\u72b6\u6001\u4ee5\u53ca\u5728\u96f6\u7535\u573a\u9644\u8fd1\u4ea4\u6362\u76f8\u4e92\u4f5c\u7528\u8bf1\u5bfc\u7684\u95f4\u9699\u76f8\u3002\u5c3d\u7ba1\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\u7684<em><i>\u03bd<\/i><\/em>=\u00b12\u6001\u5728B&gt;1.2\u2009T\u4e4b\u524d\u5df2\u7ecf\u88ab\u89c2\u5bdf\u5230\uff0c\u4f46\u5b83\u4eec\u7684\u786e\u5207\u6027\u8d28\u8fd8\u6ca1\u6709\u88ab\u63ed\u793a\uff0c\u7279\u522b\u662f\u5728\u78c1\u573a\u964d\u4f4e\u5230B=0\u6781\u9650\u65f6\u3002\u8fd9\u4e9b\u6001\u7684\u5e8f\u53c2\u91cf\u7279\u522b\u6709\u8da3\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u5728B=0\u6781\u9650\u4e2d\u63ed\u793a\u53cc\u5c42\u77f3\u58a8\u70ef\u7684\u57fa\u6001\u3002<strong><b>\u7531\u4e8e\u53cc\u5c42\u77f3\u58a8\u70ef\u7684\u4e8c\u6b21\u80fd\u5e26\u63a5\u89e6\u548c\u975e\u5e73\u51e1\u7f20\u7ed5\u6570\uff0c\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\u7684\u4ea4\u6362\u76f8\u4e92\u4f5c\u7528\u7279\u522b\u5f3a\u70c8\uff0c\u4ea7\u751f\u4e86\u975e\u5e73\u51e1\u7684\u51c6\u7c92\u5b50\u62d3\u6251\u6027\u8d28<\/b><\/strong>\uff1b\u5404\u79cd\u5bf9\u79f0\u7834\u7f3a\u6001\u88ab\u8ba4\u4e3a\u662f\u95f4\u9699\u7ade\u4e89\u57fa\u6001\uff0c\u5176\u4e2d\u4e24\u4e2aQAH\u76f8\u65cf\u8868\u73b0\u51fa\u8f68\u9053\u78c1\u6027\u3002\u901a\u8fc7\u7ffb\u8f6cB\uff0c\u8f68\u9053\u78c1\u5316\u5f3a\u5ea6\u548cQAH\u76f8\u7684\u81ea\u65cb\u53d8\u5f97\u76f8\u53cd\u3002\u5bf9\u6bd4B=3\u00a0T(\u56fe1c)\u548cB=0.8 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nm<sup>-1<\/sup>\u7684\u6247\u5f62\u56fe(\u56fe2a, 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srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-166.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-166-300x179.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>\u56fe3. \u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\u91cf\u5b50\u53cd\u5e38\u970d\u5c14<em><i>\u03bd<\/i><\/em>=-2\u89c2\u6d4b\u5230\u7684\u78c1\u6ede<\/p>\n<p><strong style=\"line-height: 1.5;\"><b>\u56db\u3001\u53d6\u51b3\u4e8e\u7535\u573a\u7684\u6fc0\u6d3b\u95f4\u9699\u3002<\/b><\/strong><\/p>\n<p>\u4f5c\u4e3a\u5bf9<em><i>\u03bd<\/i><\/em>=-2 QAH\u76f8\u7a33\u5b9a\u6027\u7684\u6700\u7ec8\u6d4b\u8bd5\uff0c\u672c\u5de5\u4f5c\u7814\u7a76\u4e86\u5728B=0.5 T\u7684\u4e0d\u540c\u7535\u573a\u4e0b\uff0c<em><i>\u03bd<\/i><\/em>=-2 QAH\u76f8\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u3002\u867d\u7136\u901a\u8fc7\u8ba1\u7b97<em><i>\u03bd<\/i><\/em>=-2\u6001\u7684\u6fc0\u6d3b\u80fd\u0394<em><i>\u03bd<\/i><\/em>=-2\u6765\u5b9a\u91cf\u5730\u4f30\u8ba1<em><i>\u03bd<\/i><\/em>=-2\u6001\u7684\u4f53\u9699\u662f\u5f88\u56f0\u96be\u7684\uff0c\u4f46\u662f\u7531\u4e8e\u65e0\u5e8f\u7684\u5b58\u5728\uff0c\u672c\u5de5\u4f5c\u7528\u8fd9\u79cd\u4f30\u8ba1\u6765\u76f8\u5bf9\u5224\u65ad\u5404\u4e2a\u89c2\u6d4b\u76f8\u7684\u7a33\u5b9a\u6027\u3002\u5728\u96f6\u7535\u573a\u4e0b(\u56fe4a)\uff0c\u03bd=-2\u6001\u4e0d\u50cf\u4e4b\u524d\u770b\u5230\u7684\u90a3\u6837\u6301\u7eed\u5230B=0.5 T\uff0c\u6e29\u5ea6\u4f9d\u8d56\u6027\u5f88\u5c0f\uff0c\u8868\u660e\u80fd\u9699\u6d88\u5931\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5728E<sub>\u22a5<\/sub>=15 mV nm<sup>-1<\/sup>\u7684\u6709\u9650\u7535\u573a\u4e0b\uff0c\u6709\u660e\u663e\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027(\u56fe4b)\uff0c\u80fd\u9699\u4e3a\u0394<sub>\u03bd=-2<\/sub>=(0.09\u00b10.02)meV\u3002\u65bd\u52a0\u66f4\u9ad8\u7684E<sub>\u22a5<\/sub>=50mV nm<sup>-1<\/sup>\u7535\u573a(\u56fe4c)\uff0c<em><i>\u03bd<\/i><\/em>=-2\u6001\u53d8\u5f97\u4e0d\u592a\u7a33\u5b9a\uff0c\u0394<em><sub><i>\u03bd<\/i><\/sub><\/em><sub>=-2<\/sub>=(0.039\u00b10.02)meV\u53d8\u5c0f\uff0c\u4e0e\u9884\u6d4b\u7684\u90e8\u5206\u5c42\u504f\u632f\u5ea6\u4e00\u81f4\u3002\u5728\u96f6\u7535\u573a\u4e0b\uff0c<em><i>\u03bd<\/i><\/em>=0\u6001\u5177\u6709\u5927\u95f4\u9699\u0394<em><sub><i>\u03bd<\/i><\/sub><\/em><sub>=0<\/sub>=3 meV\uff0c\u4e2d\u95f4\u7535\u573a\u7684\u6d88\u5931\u95f4\u9699\u548c\u9ad8\u7535\u573a\u7684\u518d\u73b0\uff0c\u8fd9\u4e0e\u4ece\u76f8\u4e92\u4f5c\u7528\u9a71\u52a8\u7684\u5c42\u5e73\u8861\u95f4\u9699LAF\u76f8\u5230\u7535\u573a\u8bf1\u5bfc\u7684\u5411\u7535\u573a\u8bf1\u5bfc\u7684\u5168\u5c42\u6781\u5316\u95f4\u9699QVH\u76f8\u53d8\u7684\u89c2\u5bdf\u76f8\u4e00\u81f4\u3002<strong><em><b><i>\u03bd<\/i><\/b><\/em><\/strong><strong><b>=\u00b12\u6001\u7684\u60ca\u4eba\u7a33\u5b9a\u6027\u7531\u66f4\u5927\u7684\u6fc0\u6d3b\u95f4\u9699\u6240\u8bc1\u660e\uff0c\u8fd9\u6e90\u4e8e\u7535\u573a\u8026\u5408\u5230\u5c42\u6781\u5316\u548c\u78c1\u573a\u8026\u5408\u5230\u51c6\u7c92\u5b50\u7684\u8f68\u9053\u78c1\u5316\u3002<\/b><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-228216\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-167.png\" alt=\"\" width=\"600\" height=\"755\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-167.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2021\/10\/\u56fe\u7247-167-238x300.png 238w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>\u56fe4. <em><i>\u03bd<\/i><\/em>=\u00b12\u548c<em><i>\u03bd<\/i><\/em>=\u00b14\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u8868\u73b0\u51fa\u660e\u663e\u7684\u7535\u573a\u4f9d\u8d56\u6027<\/p>\n<p><strong style=\"line-height: 1.5;\"><b>\u7ed3\u8bba\u4e0e\u5c55\u671b<\/b><\/strong><\/p>\n<p>\u672c\u5de5\u4f5c\u62a5\u9053\u4e86\u53cc\u5c42\u77f3\u58a8\u70ef\u5668\u4ef6\u5728\u7ea620 mT\u7684\u5f02\u5e38\u5c0f\u78c1\u573a\u4e0b\uff0c\u5bf9\u586b\u5145\u56e0\u5b50<em><i>\u03bd<\/i><\/em>=\u00b12\u6001\u7684\u89c2\u5bdf\u3002\u6b64\u5916\uff0c\u672c\u5de5\u4f5c\u8fd8\u89c2\u5bdf\u5230\u573a\u8c03\u8c10\u548c\u78c1\u6ede\u73b0\u8c61\uff0c\u8fd9\u6709\u529b\u5730\u8bc1\u660e\u4e86\u5728\u7eaf\u53cc\u5c42\u77f3\u58a8\u70ef\u4e2d\uff0c<em><i>\u03bd<\/i><\/em>=\u00b12\u6001\u662f\u7531\u8f68\u9053\u78c1\u9a71\u52a8\u7684\u94c1\u78c1\u3001\u94c1\u7535\u548cQAH\u76f8\u3002\u672c\u5de5\u4f5c\u4e3a\u53cc\u5c42\u77f3\u58a8\u70ef\u91cf\u5b50\u53cd\u5e38\u970d\u5c14\u6548\u5e94\u7684\u7814\u7a76\u63d0\u4f9b\u4e86\u65b9\u5411\u3002<\/p>\n<p>\u7b2c\u4e00\u4f5c\u8005\uff1aFabian R. Geisenhof<\/p>\n<p>\u901a\u8baf\u4f5c\u8005\uff1aFan Zhang\u3001R. Thomas Weitz<\/p>\n<p>\u901a\u8baf\u5355\u4f4d\uff1a\u7f8e\u56fd\u5fb7\u5dde\u5927\u5b66\u7406\u67e5\u68ee\u8fbe\u62c9\u65af\u5206\u6821\u3001\u6155\u5c3c\u9ed1\u5927\u5b66<\/p>\n<p>\u8bba\u6587doi\uff1a<\/p>\n<p>https:\/\/doi.org\/10.1038\/s41586-021-03849-w<\/p>\n<p>\u672c\u6587\u7531\u6e29\u534e\u4f9b\u7a3f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u80cc\u666f\u4ecb\u7ecd \u5355\u7c92\u5b50\u6548\u5e94(\u5982\u80fd\u5e26\u62d3\u6251)\u548c\u591a\u4f53\u6548\u5e94(\u5982\u7535\u5b50-\u7535\u5b50\u76f8\u4e92\u4f5c\u7528)\u4e4b\u95f4\u590d\u6742\u7684\u76f8\u4e92\u4f5c\u7528\u51b3\u5b9a\u4e86\u8bb8\u591a\u4f4e\u7ef4\u7cfb\u7edf\u7684\u7535\u5b50\u57fa\u6001\u3002\u7279\u522b\u6709\u8da3\u7684\u4e00\u7c7b\u7cfb\u7edf\u662f\u51c6\u7c92\u5b50\u8d1d\u91cc\u66f2\u7387\u5f15\u8d77\u8f68\u9053\u800c&#8230;<\/p>\n","protected":false},"author":11454,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215],"tags":[],"class_list":["post-228215","post","type-post","status-publish","format-standard","hentry","category-jiedu"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/228215"}],"collection":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/users\/11454"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=228215"}],"version-history":[{"count":1,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/228215\/revisions"}],"predecessor-version":[{"id":228221,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/228215\/revisions\/228221"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=228215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=228215"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=228215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}