{"id":171079,"date":"2019-04-01T06:37:09","date_gmt":"2019-03-31T22:37:09","guid":{"rendered":"\/\/m.iemloyee.com\/?p=171079"},"modified":"2019-03-31T22:04:25","modified_gmt":"2019-03-31T14:04:25","slug":"%e3%80%90%e5%9b%bd%e5%a4%96%e3%80%91%e6%96%b0%e5%8a%a0%e5%9d%a1%e5%9b%bd%e7%ab%8b%e5%a4%a7%e5%ad%a6hyunsoo-yang%e8%af%be%e9%a2%98%e7%bb%84nat-commun-%e9%80%9a%e8%bf%87%e8%b4%b9%e7%b1%b3%e9%9d%a2","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=171079","title":{"rendered":"\u65b0\u52a0\u5761\u56fd\u7acb\u5927\u5b66Hyunsoo Yang\u8bfe\u9898\u7ec4Nat. Commun.:\u901a\u8fc7\u8d39\u7c73\u9762\u62d3\u6251\u548c\u51f8\u9762\u5f62\u6210\u7684\u975e\u7ebf\u6027\u78c1\u8f93\u8fd0"},"content":{"rendered":"

\u3010\u5f15\u8a00<\/b><\/strong>\u3011<\/p>\n

\u5c42\u72b6\u8fc7\u6e21\u91d1\u5c5e\u4e8c\u786b\u5316\u7269\u662f\u4e00\u7c7b\u65b0\u5174\u7684\u7269\u8d28\uff0c\u5177\u6709\u65b0\u7684\u7269\u7406\u6027\u8d28\u548c\u5e7f\u6cdb\u7684\u6f5c\u5728\u5e94\u7528\u3002\u5176\u4e2d\uff0c\u534a\u91d1\u5c5e\u94a8\u4e8c\u78b2\u5316\u7269\uff08WTe2<\/sub>\uff09\u5177\u6709\u51fa\u6781\u5927\u4e14\u4e0d\u9971\u548c\u7684\u78c1\u963b\uff08MR\uff09\uff0c\u8fd9\u5f52\u56e0\u4e8e\u5176\u5177\u6709\u5b8c\u7f8e\u8865\u507f\u7535\u5b50\u548c\u7a7a\u7a74\u7684\u8d39\u7c73\u8868\u9762\u3002\u76ee\u524d\u4e3a\u6b62\uff0c\u5728WTe2<\/sub>\u4e2d\u7814\u7a76\u7684MR\u4e3b\u8981\u51fa\u73b0\u5728\u7ebf\u6027\u533a\u57df\u4e2d\uff0c\u5e76\u4e14\u7f3a\u4e4f\u5bf9\u7535\u6d41\u4f9d\u8d56\u7684\u975e\u7ebf\u6027\u78c1\u963b\u7684\u63a2\u7d22\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6700\u8fd1\u5728\u6781\u6027\u534a\u5bfc\u4f53\u548c\u5177\u6709\u81ea\u65cb\u52a8\u91cf\u9501\u5b9a\u5e26\u7684\u62d3\u6251\u7edd\u7f18\u4f53\u4e2d\u53d1\u73b0\u4e86\u4e0e\u6240\u65bd\u52a0\u7684\u7535\u573a\u548c\u78c1\u573a\u7ebf\u6027\u6210\u6bd4\u4f8b\u7684\u975e\u7ebf\u6027\u78c1\u963b\uff08NLMR\uff09\uff0c\u5e76\u4e14\u5f15\u8d77\u4e86\u51dd\u805a\u6001\u7269\u7406\u65b9\u5411\u7684\u7814\u7a76\u5174\u8da3\u3002\u5728WTe2<\/sub>\u4e2d\uff0c\u5927\u7684\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff08SOC\uff09\u548c\u7834\u574f\u7684\u53cd\u8f6c\u5bf9\u79f0\u6027\u63d0\u5347\u4e86\u81ea\u65cb\u7b80\u5e76\u6027\uff0c\u8fd9\u4e2a\u73b0\u8c61\u53ef\u4ee5\u5728\u81ea\u65cb\u548c\u89d2\u5ea6\u5206\u8fa8\u5149\u7535\u5b50\u80fd\u8c31\uff08ARPES\uff09\u4e2d\u89c2\u5bdf\u5230\u3002\u5229\u7528\u8f83\u5927\u7684SOC\u548c\u8f83\u4f4e\u7684\u7ed3\u6676\u5bf9\u79f0\u6027\uff0cWTe2<\/sub>\u6700\u8fd1\u88ab\u8bc1\u660e\u662f\u4e00\u79cd\u81ea\u65cb\u6e90\uff0c\u7528\u4e8e\u4ea7\u751f\u76f8\u90bb\u78c1\u6027\u6750\u6599\u7684\u5e73\u9762\u5916\u963b\u5c3c\u8f6c\u77e9\u3002\u4e3a\u4e86\u8fdb\u4e00\u6b65\u63a2\u7d22WTe2<\/sub>\u4e2d\u81ea\u65cb\u6781\u5316\u5e26\u7684\u5206\u652f\uff0c\u4ee5\u53ca\u5b83\u4eec\u4e0e\u7ed3\u6784\u4e30\u5bcc\u7684\u8d39\u7c73\u8868\u9762\u7684\u76f8\u4e92\u4f5c\u7528\uff0c\u4f5c\u8005\u8be6\u7ec6\u7814\u7a76\u4e86\u81ea\u65cb\u76f8\u5173\u7684\u975e\u7ebf\u6027\u78c1\u8f6c\u8fd0\u3002<\/p>\n

WTe2<\/sub>\u8868\u73b0\u51fa\u5bf9\u6e29\u5ea6\u975e\u5e38\u654f\u611f\u7684\u6027\u8d28\uff0c\u8fd9\u662f\u4f4e\u6e29\u4e0b\u8fd1\u4e4e\u5b8c\u7f8e\u7684\u8f7d\u6d41\u5b50\u8865\u507f\u548c~160K\u7684\u7a7a\u7a74\u6291\u5236Lifshitz\u8dc3\u8fc1\u7684\u7efc\u5408\u7ed3\u679c\u3002\u56e0\u6b64\uff0c\u5982ARPES\u6240\u63ed\u793a\u7684\uff0c\u5c0f\u7684\u6e29\u5ea6\u53d8\u5316\u5f15\u8d77\u8d39\u7c73\u8868\u9762\u7684\u57fa\u672c\u53d8\u5316\u3002 \u6b64\u5916\uff0cWTe2<\/sub>\u5728~70 K\u65f6\u7ecf\u5386\u4e86\u4eceWeyl\u5230\u62d3\u6251\u5e73\u51e1\u534a\u91d1\u5c5e\u7684\u62d3\u6251\u8fc7\u6e21\u3002\u867d\u7136\u5bf9\u8d39\u7c73\u8868\u9762\u7684\u7406\u89e3\u5bf9\u4e8e\u63a2\u7d22\u548c\u89e3\u91ca\u8bb8\u591a\u7269\u7406\u73b0\u8c61\uff08\u4f8b\u5982\u632f\u8361\u4ea4\u6362\u8026\u5408\u6216\u8d85\u5bfc\u6027\uff09\u662f\u81f3\u5173\u91cd\u8981\u7684\uff0c\u4f46\u76ee\u524d\u5bf9\u4ed6\u7684\u7814\u7a76\u8fd8\u662f\u5f88\u6709\u9650\u7684\u3002\u56e0\u4e3a\u5177\u6709\u5341\u5206\u4e30\u5bcc\u4e14\u6613\u4e8e\u8c03\u8282\u7684\u8d39\u7c73\u8868\u9762\uff0cWTe2<\/sub>\u4e3a\u7814\u7a76\u8fd9\u4e9b\u95ee\u9898\u63d0\u4f9b\u4e86\u7edd\u4f73\u5e73\u53f0\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb<\/b><\/strong>\u3011<\/p>\n

\u8fd1\u65e5\uff0c\u65b0\u52a0\u5761\u56fd\u7acb<\/b><\/strong>\u5927\u5b66<\/b><\/strong>Hyunsoo Yang<\/b><\/strong>\u8bfe\u9898\u7ec4<\/b><\/strong>\u62a5\u9053\u4e86WTe2<\/sub>\u4e2d\u7535\u6d41\u76f8\u5173\u7684NLMR\u73b0\u8c61\uff0c\u5176\u4e0e\u65bd\u52a0\u7684\u7535\u6d41\u548c\u78c1\u573a\u7684\u7b2c\u4e00\u529f\u7387\u6210\u6bd4\u4f8b\u3002\u8fd9\u4e0e\u8fc4\u4eca\u4e3a\u6b62\u4ee5WTe2<\/sub>\u4e3a\u7279\u5f81\u7684\u4f20\u7edf\uff08\u7ebf\u6027\uff09MR\u5f62\u6210\u4e86\u9c9c\u660e\u5bf9\u6bd4\uff0cWTe2<\/sub>\u5728\u78c1\u573a\u4e2d\u662f\u7535\u6d41\u65e0\u5173\u6216\u4e8c\u6b21\u7684\u5173\u7cfb\u3002\u6709\u8da3\u7684\u662f\uff0cNLMR\u663e\u793a\u51fa\u6e29\u5ea6\u9a71\u52a8\u7684\u53cd\u8f6c\u548c\u6cbf\u4e0d\u540c\u6676\u8f74\u7684\u663e\u7740\u5404\u5411\u5f02\u6027\u3002 \u5b9e\u9a8c\u7ed3\u679c\u901a\u8fc7\u7406\u8bba\u5efa\u6a21\u5b9a\u6027\u590d\u5236\uff0c\u8be5\u7406\u8bba\u5efa\u6a21\u5c06\u4ece\u5934\u7b97\u5e26\u7ed3\u6784\u8ba1\u7b97\u4e0e\u78c1\u54cd\u5e94\u7684\u534a\u7ecf\u5178\u8ba1\u7b97\u76f8\u7ed3\u5408\u3002\u8ba1\u7b97\u8868\u660e\uff0c\u81ea\u65cb\u6781\u5316\u7535\u5b50\u7ed3\u6784\u968f\u7740\u78c1\u573a\u53d8\u5316\uff0c\u4ea7\u751f\u4e86\u81ea\u65cb\u76f8\u5173NLMR\u3002 \u6b64\u5916\uff0c\u4f5c\u8005\u786e\u5b9aNLMR\u7684\u53cd\u8f6c\u6e90\u4e8e\u8d39\u7c73\u8f6e\u5ed3\u4ece\u51f8\u9762\u5230\u51f9\u9762\u7684\u8f6c\u53d8\uff0c\u800c\u5de8\u5927\u7684\u5404\u5411\u5f02\u6027\u662f\u7531\u4e8e\u8d39\u7c73\u9762\u7684\u4f4e\u5bf9\u79f0\u6027\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u5728\u6b64\u5efa\u7acb\u4e86\u8d39\u7c73\u8868\u9762\u62d3\u6251\uff0c\u51f8\u6027\u548c\u975e\u7ebf\u6027\u78c1\u8f93\u8fd0\u54cd\u5e94\u4e4b\u95f4\u7684\u5bc6\u5207\u5173\u7cfb\u3002 \u8fd9\u4e9b\u7ed3\u679c\u8fd8\u8868\u660e\uff0c\u8d39\u7c73\u80fd\u7ea7\u7684\u5fae\u8c03\u5bf9\u4e8e\u63a7\u5236\u534a\u91d1\u5c5e\u4e2d\u7684\u975e\u7ebf\u6027\u78c1\u8f93\u8fd0\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a\u201cNonlinear Magnetotransport Shaped by Fermi Surface Topology and Convexity<\/b><\/strong>\u201d\u53d1\u8868\u5728Nat. Commun.<\/b><\/strong>\u4e0a\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n

Figure <\/b><\/strong>1<\/b><\/strong>.<\/b><\/strong>WTe<\/b><\/strong>2<\/b><\/sub><\/strong>\u4e2d\u7684\u6676\u4f53\u548c\u80fd\u5e26\u7ed3\u6784\u4ee5\u53ca\u975e\u7ebf\u6027\u78c1\u8f6c\u8fd0<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a).\u6676\u4f53\u7ed3\u6784<\/p>\n

(b).\u8ba1\u7b97\u5f97\u5230\u7684\u80fd\u5e26\u7ed3\u6784<\/p>\n

(c).\u8d39\u7c73\u8868\u9762\u793a\u610f\u56fe<\/p>\n

(d).\u7535\u963b\u7387\u7684\u6e29\u5ea6\u4f9d\u8d56<\/p>\n

(e).\u970d\u5c14\u6746\u88c5\u7f6e\u7684\u5149\u5b66\u56fe\u50cf<\/p>\n

(f).MR\u7684\u6d4b\u91cf\u793a\u610f\u56fe<\/p>\n

Figure <\/b><\/strong>2<\/b><\/strong>.<\/b><\/strong>WTe<\/b><\/strong>2<\/b><\/sub><\/strong>\u4e2d\u5177\u6709\u6e29\u5ea6\u9a71\u52a8\u53cd\u8f6c\u7684\u975e\u7ebf\u6027\u78c1\u963b<\/b><\/strong><\/p>\n

\"\"<\/p>\n

(a).\u89d2\u5ea6\u4f9d\u8d56\u7684\u4e8c\u6b21\u8c10\u6ce2\u7535\u963b<\/p>\n

(b,c).\u7535\u6d41\u548c\u78c1\u573a\u4f9d\u8d56\u7684\u6b63\u5f26\u632f\u5e45<\/p>\n

(d).\u6b63\u5f26\u632f\u5e45\u968f\u6e29\u5ea6\u7684\u53d8\u5316<\/p>\n

(e).\u4e09\u79cd\u6e29\u5ea6\u4e0b\u970d\u5c14\u7535\u963b\u7684\u573a\u4f9d\u8d56\u6027<\/p>\n

(f).ne<\/sub>\u548cnh<\/sub>\u7684\u6e29\u5ea6\u4f9d\u8d56<\/p>\n

Figure <\/b><\/strong>3<\/b><\/strong>.<\/b><\/strong>\u975e\u7ebf\u6027\u78c1\u963b\u7684\u6676\u4f53\u5404\u5411\u5f02\u6027<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a).\u5706\u5f62\u970d\u5c14\u6746\u88c5\u7f6e\u7684\u5149\u5b66\u56fe\u50cf<\/p>\n

(b).\u901a\u9053\u7535\u963b\u7387\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027<\/p>\n

(c,d).\u975e\u7ebf\u6027\u78c1\u963b\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027<\/p>\n

Figure <\/b><\/strong>4<\/b><\/strong>.<\/b><\/strong>\u975e\u7ebf\u6027\u5145\u7535\u7535\u6d41\u548c\u8d39\u7c73\u9762<\/b><\/strong>\u7684\u7406\u8bba\u8ba1\u7b97<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/b><\/strong><\/p>\n

\u5728\u8fd9\u4e2a\u5de5\u4f5c\u4e2d\uff0c\u4f5c\u8005\u62a5\u9053\u4e86\u534a\u91d1\u5c5eWTe2<\/sub>\u4e2d\u5ba4\u6e29\u4e0b\u7684\u975e\u7ebf\u6027\u78c1\u963b\u73b0\u8c61\uff0c\u5176\u4e2d\u6709\u4e00\u4e2a\u6709\u8da3\u7684\u6e29\u5ea6\u9a71\u52a8\u53cd\u8f6c\u3002 \u7406\u8bba\u8ba1\u7b97\u91cd\u73b0\u4e86\u975e\u7ebf\u6027\u4f20\u8f93\u6d4b\u91cf\uff0c\u5e76\u8ba4\u4e3a\u8fd9\u79cd\u53cd\u8f6c\u5f52\u56e0\u4e8e\u8d39\u7c73\u8868\u9762\u51f8\u5ea6\u7684\u6e29\u5ea6\u8bf1\u5bfc\u53d8\u5316\u3002WTe2<\/sub>\u4e2d\u7684\u975e\u7ebf\u6027\u78c1\u963b\u5177\u6709\u8f83\u5927\u7684\u5404\u5411\u5f02\u6027\uff0c\u8fd9\u662f\u7531\u4e8e\u5176\u8d39\u7c73\u9762\u7684\u4f4e\u5bf9\u79f0\u6027\u6240\u9020\u6210\u7684\u3002\u5b9e\u9a8c\u548c\u7406\u8bba\u8ba1\u7b97\u4e4b\u95f4\u7684\u826f\u597d\u4e00\u81f4\u6027\u63ed\u793a\u4e86\u8d39\u7c73\u8868\u9762\u62d3\u6251\u548c\u51f8\u6027\u5bf9\u975e\u7ebf\u6027\u78c1\u54cd\u5e94\u7684\u5de8\u5927\u5f71\u54cd\u3002<\/p>\n

Nonlinear Magnetotransport Shaped by Fermi Surface Topology and Convexity<\/a><\/p>\n

(Nat. Commun., 2019, DOI: 10.1038\/s41467-019-09208-8)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u5b66\u672f\u7ec4tt\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002 \u00a0<\/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\u5927\u5bb6\u5ead\u3002 \u00a0<\/p>\n

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