{"id":132813,"date":"2018-04-02T06:30:11","date_gmt":"2018-04-01T22:30:11","guid":{"rendered":"\/\/m.iemloyee.com\/?p=132813"},"modified":"2018-04-07T16:54:51","modified_gmt":"2018-04-07T08:54:51","slug":"%e3%80%90iop%e4%b8%93%e6%a0%8f%e3%80%91%e8%8d%b7%e5%85%b0%e4%b9%8c%e7%89%b9%e5%88%97%e6%94%af%e5%a4%a7%e5%ad%a6%e4%b8%8e%e5%be%b7%e5%9b%bd%e8%8e%b1%e5%b8%83%e5%b0%bc%e5%85%b9%e6%9d%90%e6%96%99","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=132813","title":{"rendered":"\u3010IOP\u4e13\u680f\u3011\u8377\u5170\u4e4c\u7279\u5217\u652f\u5927\u5b66\u4e0e\u5fb7\u56fd\u83b1\u5e03\u5c3c\u5179\u6750\u6599\u7814\u7a76\u6240\u56e2\u961fNano Futures\uff1a\u79d1\u5b66\u5bb6\u9884\u6d4b\u4e8c\u7ef4\u6750\u6599\u81ea\u7136\u76b1\u647a\u5f15\u53d1\u9707\u8361\u78c1\u963b"},"content":{"rendered":"<p><strong>\u3010\u5f15\u8a00\u3011<br \/>\n <\/strong><br \/>\n \u4e8c\u7ef4\u6750\u6599\u8b6c\u5982\u4e8c\u7ef4\u7535\u5b50\u6c14\u4e0e\u77f3\u58a8\u70ef, \u56e0\u5176\u4f4e\u7ef4\u5ea6\u4ee5\u53ca\u7279\u522b\u7684\u7535\u5b50\u7ed3\u6784, \u5177\u6709\u4e00\u822c\u7684\u4e09\u7ef4\u5bfc\u4f53\u6750\u6599\u5b8c\u5168\u4e0d\u540c\u7684\u4f20\u8f93\u6027\u8d28. \u5b83\u7684\u78c1\u963b\u884c\u4e3a\u7279\u5f02\u5e76\u4e14\u53ef\u5177\u6709\u5f88\u5f3a\u7684\u81ea\u65cb\u8f68\u9053\u8026\u5408\u6548\u5e94, \u8fd9\u4e9b\u4e30\u5bcc\u7684\u7269\u7406\u7279\u6027\u5177\u6709\u5f88\u9ad8\u7684\u5e94\u7528\u4ef7\u503c. \u5728\u8fd9\u4e9b\u4e8c\u7ef4\u8584\u819c\u4e0a, \u7531\u65bc\u5f20\u529b\u5206\u5e03\u7684\u4e0d\u5747\u5300, \u5f88\u5bb9\u6613\u81ea\u7136\u5f62\u6210\u5948\u7c73\u5c3a\u5ea6\u7684\u76b1\u647a\u7ed3\u6784. \u5b9e\u9a8c\u5b66\u5bb6\u751a\u81f3\u53ef\u4ee5\u900f\u8fc7\u65bd\u529b\u6216\u8005\u662f\u5916\u52a0\u7535\u6d41\u64cd\u63a7\u8fd9\u4e9b\u76b1\u647a\u7684\u6ce2\u957f\u4e0e\u632f\u5e45. \u5f53\u7535\u5b50\u5728\u8584\u819c\u4e0a\u6cbf\u7740\u76b1\u647a\u8fd0\u52a8\u5e76\u540c\u65f6\u53d7\u5230\u5916\u573a\u4f5c\u7528\u65f6, \u4f1a\u611f\u53d7\u5230(1)\u5916\u573a\u7b49\u6548\u5730\u6cbf\u7740\u51e0\u4f55\u66f2\u7387\u53d8\u52a8\u4ee5\u53ca(2)\u6750\u6599\u5f20\u529b\u7684\u53d8\u5316, \u4e5f\u5c31\u662f\u8bf4\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u4e09\u7ef4\u7684\u51e0\u4f55\u5f62\u72b6\u5728\u4e8c\u7ef4\u7cfb\u7edf\u7684\u7535\u5b50\u4f20\u8f93\u5f15\u5165\u65b0\u7684\u7269\u7406. \u56e0\u6b64, \u4e86\u89e3\u8fd9\u4e9b\u76b1\u647a\u5982\u4f55\u5f71\u54cd\u7535\u5b50\u4f20\u8f93\u662f\u4e00\u4e2a\u6709\u8da3\u4e14\u6709\u5e94\u7528\u4ef7\u503c\u7684\u8bfe\u9898.<\/p>\n<p><strong>\u3010\u6210\u679c\u7b80\u4ecb\u3011<br \/>\n <\/strong><br \/>\n \u8fd1\u65e5\uff0c\u8377\u5170\u4e4c\u7279\u5217\u652f\u5927\u5b66Carmine Ortix\u6559\u6388(\u901a\u8baf\u4f5c\u8005)\u4e0e\u5fb7\u56fd\u83b1\u5e03\u5c3c\u5179\u6750\u6599\u7814\u7a76\u6240\u5f20\u666f\u7693\u7814\u7a76\u5458(\u7b2c\u4e00\u517c\u901a\u8baf\u4f5c\u8005)\u5408\u4f5c\uff0c\u9884\u6d4b\u4e8c\u7ef4\u6750\u6599\u4e0a\u7684\u51e0\u4f55\u76b1\u647a\u4f1a\u5f15\u53d1Weiss\u78c1\u963b\u9707\u8361(Weiss oscillation)\u5e76\u5f15\u53d1\u5f02\u5411\u78c1\u963b(Anisotropic magnetoresistance). Weiss\u9707\u8361\u662f\u4e00\u79cd\u53e4\u5178\u7684\u78c1\u963b\u9707\u8361\u73b0\u8c61, \u5b83\u6e90\u81ea\u65bc: \u5f53\u7535\u5b50\u6cbf\u7740\u5468\u671f\u6027\u4f4d\u80fd\u79fb\u52a8\u5e76\u540c\u65f6\u611f\u53d7\u5230\u5916\u52a0\u78c1\u573a\u65f6,\u7535\u5b50\u53ef\u4ee5\u4e0e\u5468\u671f\u6027\u8fb9\u754c\u5171\u632f\u5e76\u6cbf\u7740\u8fb9\u754c\u5feb\u901f\u98d8\u79fb, \u56e0\u6b64\u7535\u963b\u5728\u7279\u5b9a\u7684\u78c1\u573a\u503c\u663e\u7740\u964d\u4f4e\u5f62\u6210\u78c1\u963b\u9707\u8361. \u9664\u4e86\u78c1\u963b, \u5728\u65cb\u8f6c\u5916\u52a0\u78c1\u573a\u4e0e\u4e8c\u7ef4\u8584\u819c\u7684\u76f8\u5bf9\u89d2\u5ea6\u65f6, \u8be5\u7814\u7a76\u4e5f\u53d1\u73b0\u6b64\u7cfb\u7edf\u7684\u5f02\u5411\u78c1\u963b\u4e5f\u4f1a\u5c55\u73b0Weiss \u9707\u8361, \u8fd9\u662f\u9996\u4e2a\u7cfb\u7edf\u5728\u5f02\u5411\u78c1\u963b\u4e0a\u5c55\u73b0\u4e86Weiss\u9707\u8361. \u76f8\u5173\u6210\u679c\u4ee5\u9898\u4e3a\u201cAngle-dependent Weiss oscillations in a nanocorrugated two dimensional electron gas\u201d\u53d1\u8868\u5728\u4e86Nano Futures\u4e0a\u3002<\/p>\n<p><strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-132814\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/1-37.png\" alt=\"\" width=\"502\" height=\"202\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/1-37.png 502w, \/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/1-37-300x121.png 300w\" sizes=\"(max-width: 502px) 100vw, 502px\" \/><br \/>\n \u56fe1\u4e8c\u7ef4\u76b1\u647a\u8584\u819c\u4e0e\u7b49\u6548\u78c1\u573a<\/p>\n<p>a. \u4e0a\u56fe: \u4e8c\u7ef4\u76b1\u647a\u8584\u819c. \u4e0b\u56fe: \u5916\u52a0\u5747\u5300\u78c1\u573a\u4e0ex\u8f74\u5939\u89d2\u03b8. \u76b1\u647a\u9ad8\u5ea6\u4e3aa=25 nm, \u5176\u6ce2\u957f\u4e3a\u03bb=250 nm.<br \/>\n b. \u7535\u5b50\u5728\u8584\u819c\u4e0a\u6240\u770b\u5230\u7684\u7b49\u6548\u78c1\u573a\u53ef\u5206\u4e3a\u4e24\u4e2a\u5206\u91cf, \u5206\u522b\u662f\u5747\u5300\u78c1\u573a(B0)\u4e0e\u5e73\u5747\u503c\u4e3a\u96f6\u7684\u9707\u8361\u78c1\u573a(B1). \u8fd9\u4e24\u4e2a\u78c1\u573a\u7684\u5927\u5c0f\u662f\u78c1\u573a\u89d2\u5ea6\u03b8\u7684\u51fd\u6570.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-132815\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/2-41.png\" alt=\"\" width=\"465\" height=\"372\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/2-41.png 465w, \/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/2-41-300x240.png 300w\" sizes=\"(max-width: 465px) 100vw, 465px\" \/><\/p>\n<p style=\"text-align: center;\">\u56fe2\u7535\u5b50\u7684\u8def\u5f84\u968f\u78c1\u573a\u89d2\u5ea6\u53d8\u5316<\/p>\n<p>\u9876\u7aef\u56fe: \u4e09\u4e2a\u4e0d\u540c\u5916\u52a0\u78c1\u573a\u7684\u89d2\u5ea6\u4e0b, \u7535\u5b50\u6240\u53d7\u5230\u7684\u7b49\u6548\u78c1\u573a. \u6b64\u5904s \u4ee3\u8868\u6cbf\u7740x\u65b9\u5411\u7684\u8584\u819c\u5f27\u957f.<br \/>\n a. \u5916\u52a0\u5f31\u78c1\u573a\u5e73\u884cx\u8f74, \u7535\u5b50\u7684cyclotron orbit\u6a2a\u8de8\u8584\u819c\u76b1\u647a.<br \/>\n b. \u5916\u52a0\u5f31\u78c1\u573a\u65cb\u8f6c\u81f3x\u8f74\u4e0ey\u8f74\u4e4b\u95f4, cyclotron orbit\u53ef\u4ee5\u4e0e\u5468\u671f\u6027\u8fb9\u754c\u5171\u632f, \u9020\u6210\u7535\u5b50\u6cbf\u76b1\u647a\u98d8\u79fb\u5f62\u6210guiding-center drift.<br \/>\n c. \u5916\u52a0\u5f31\u78c1\u573a\u6cbf\u7740y\u8f74, \u7b49\u6548\u78c1\u573a\u5e73\u5747\u503c\u4e3a\u96f6. \u6b64\u65f6\u7b49\u6548\u78c1\u573a\u53ea\u662f\u5fae\u6270\u822c\u5730\u626d\u66f2\u7535\u5b50\u8def\u5f84.<br \/>\n d. \u5916\u52a0\u5f3a\u78c1\u573a\u5e73\u884cx\u8f74, \u7531\u65bc\u78c1\u573a\u53d8\u5927, \u7535\u5b50\u7684cyclotron orbit\u7f29\u5c0f\u81f3\u5c0f\u65bc\u76b1\u647a\u957f\u5ea6.<br \/>\n e. \u5916\u52a0\u5f3a\u78c1\u573a\u4ecb\u65bcx\u8f74\u4e0ey\u8f74\u4e4b\u95f4, \u5728\u4e0d\u540c\u4f4d\u7f6e\u4e0a, \u7535\u5b50\u53ef\u4ee5\u6cbf\u7740\u76b1\u647a\u79fb\u52a8\u6216\u662f\u5f62\u6210\u4e0d\u52a8\u7684cyclotron orbit.<br \/>\n f. \u5916\u52a0\u5f3a\u78c1\u573a\u6cbf\u7740y\u8f74, \u7535\u5b50\u53ef\u4ee5\u88ab\u5c40\u9650\u5728\u76b1\u647a\u9644\u8fd1\u5f62\u6210snake orbit\u6cbf\u7740\u76b1\u647a\u79fb\u52a8. \u5728\u4e0d\u540c\u7684\u4f4d\u7f6e\u4f1a\u5f62\u6210cyclotron orbit. \u6b64\u65f6\u4e3a\u7c7b\u4e00\u7ef4(quasi-1D)\u7cfb\u7edf.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-132816\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/3-37.png\" alt=\"\" width=\"406\" height=\"274\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/3-37.png 406w, \/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/3-37-300x202.png 300w\" sizes=\"(max-width: 406px) 100vw, 406px\" \/><br \/>\n \u56fe3\u5782\u76f4\u8584\u819c\u76b1\u647a\u65b9\u5411\u7684\u78c1\u963b<\/p>\n<p>\u5927\u56fe: \u7535\u963b\u5728\u5f31\u573a\u4e0b\u5177\u6709Weiss oscillation, \u6b64\u5904Bc\u6240\u6807\u8bb0\u7684\u662f\u7279\u5b9a\u78c1\u573a\u6ee1\u8db3cyclotron orbit\u7684\u5c3a\u5bf8\u7ea6\u662f\u76b1\u647a\u6ce2\u957f\u7684\u6574\u6570\u500d(\u53c2\u8003\u56fe\u4e8cb). \u84dd\u8272, \u7d2b\u8272\u4e0e\u9ec4\u8272\u5206\u522b\u4ee3\u8868\u4e09\u79cd\u4e0d\u540c\u7684\u8f7d\u5b50\u6d53\u5ea6(n = 0.5, 1, 2 x 1012 cm-2).<br \/>\n \u5185\u5d4c\u5c0f\u56fe: \u5f3a\u573a\u4e0b, \u4e8c\u7ef4\u8584\u819c\u53d8\u4e3a\u7c7b\u4e00\u7ef4\u7cfb\u7edf, \u7535\u5b50\u65e0\u6cd5\u6a2a\u8de8\u8584\u819c\u76b1\u647a\u4f20\u8f93(\u53c2\u8003\u56fe\u4e8c f). \u56e0\u6b64\u78c1\u963b\u5927\u5e45\u98d9\u5347.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-132817\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/4-36.png\" alt=\"\" width=\"579\" height=\"222\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/4-36.png 579w, \/\/m.iemloyee.com\/wp-content\/uploads\/2018\/03\/4-36-300x115.png 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/p>\n<p style=\"text-align: center;\">\u56fe4 \u7570\u5411\u78c1\u963b<\/p>\n<p>a. \u5916\u573a\u4e3a0.4 tesla\u4e0b, \u7535\u963b\u968f\u7740\u5916\u52a0\u78c1\u573a\u89d2\u5ea6\u9707\u8361. \u8fd9\u4e5f\u662fWeiss\u9707\u8361.<br \/>\n b. \u5916\u573a\u4e3a4 tesla, \u6b64\u65f6\u5f02\u5411\u78c1\u963b\u975e\u5e38\u5de8\u5927\u8fbe\u5230\u56db\u4e2a\u6570\u91cf\u7ea7. \u8fd9\u662f\u56e0\u4e3a\u5728\u6539\u53d8\u5916\u52a0\u78c1\u573a\u89d2\u5ea6\u65f6, \u7cfb\u7edf\u7531\u4e8c\u7ef4(\u56fe\u4e8cd)\u53d8\u4e3a\u7c7b\u4e00\u7ef4\u7cfb\u7edf(\u56fe\u4e8cf).<\/p>\n<p><strong>\u3010\u5c0f\u7ed3\u3011<br \/>\n <\/strong><br \/>\n \u5728\u8fc7\u53bb\u7684\u7814\u7a76\u4e2d, Weiss \u9707\u8361\u90fd\u6e90\u81ea\u65bc\u5916\u52a0\u78c1\u573a\u4e0e\u6750\u6599\u5185\u5728\u7684\u9707\u8361\u7535\u573a\u6216\u662f\u78c1\u573a\u7684\u4ea4\u4e92\u4f5c\u7528, \u5728\u5b9e\u9a8c\u4e0a\u8981\u5b9e\u73b0Weiss\u9707\u8361\u7684\u6761\u4ef6\u975e\u5e38\u4e25\u82db, \u800c\u672c\u7814\u7a76\u63a8\u5c55\u8fd9\u79cd\u78c1\u963b\u73b0\u8c61\u81f3\u5916\u52a0\u78c1\u573a\u4e0e\u51e0\u4f55\u5f62\u72b6\u7684\u4ea4\u4e92\u4f5c\u7528. \u5e76\u4e14, \u672c\u7814\u7a76\u8fdb\u4e00\u6b65\u53d1\u73b0Weiss oscillatio\u7684\u78c1\u963b\u632f\u5e45\u53ef\u4ee5\u900f\u8fc7\u65cb\u8f6c\u4e8c\u7ef4\u8584\u819c\u4e0e\u5916\u573a\u7684\u76f8\u5bf9\u89d2\u5ea6\u6765\u8c03\u63a7, \u6b64\u53d1\u73b0\u672a\u6765\u53ef\u5e94\u7528\u65bc\u78c1\u611f\u6d4b\u5668 (magnetic sensor).<\/p>\n<p>\u6587\u732e\uff1aAngle-dependent Weiss oscillations in a nanocorrugated two dimensional electron gas Nano Futures, 2017, DOI: doi.org\/10.1088\/2399-1984\/aa9c7a<\/p>\n<p>\u6750\u6599\u4eba\u4e0eIOP\u51fa\u7248\u793e\u8054\u5408\u63a8\u51fa\u3010IOP\u4e13\u680f\u3011\uff0c\u62a5\u9053IOP\u65d7\u4e0b\u671f\u520a\u7cbe\u5f69\u7814\u7a76\u8fdb\u5c55\u3002\u672c\u6587\u7cfb\u3010IOP\u4e13\u680f\u3011\u7b2c3\u7bc7\u3002<\/p>\n<p><strong>Nano Futures<\/strong>\u662f\u82f1\u56fd\u7269\u7406\u5b66\u4f1a\uff08Institute of Physics, UK\uff09\u7684\u65d7\u8230\u520a\uff0c2017\u5e74\u521b\u520a\uff0c\u53d1\u8868\u7eb3\u7c73\u7814\u7a76\u9886\u57df\u524d\u77bb\u6027\u7684\u7814\u7a76\u6210\u679c\uff0c\u4e00\u5e74\u56db\u671f\uff0c\u6bcf\u671f\u7ea6\u516b\u7bc7\uff0c\u5927\u591a\u6570\u90fd\u662f\u9080\u8bf7\u7a3f\uff0c\u4e3b\u7f16\uff0c\u7f16\u59d4\u548c\u7f16\u8f91\u56e2\u961f\u6765\u6e90\u4e8eNanotechnology\u3002<\/p>\n<p><strong>\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu<\/strong><strong>\u3002<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u5f15\u8a00\u3011 \u4e8c\u7ef4\u6750\u6599\u8b6c\u5982\u4e8c\u7ef4\u7535\u5b50\u6c14\u4e0e\u77f3\u58a8\u70ef, \u56e0\u5176\u4f4e\u7ef4\u5ea6\u4ee5\u53ca\u7279\u522b\u7684\u7535\u5b50\u7ed3\u6784, \u5177\u6709\u4e00\u822c\u7684\u4e09\u7ef4\u5bfc\u4f53\u6750\u6599\u5b8c\u5168\u4e0d\u540c\u7684\u4f20\u8f93\u6027\u8d28. \u5b83\u7684\u78c1\u963b\u884c\u4e3a\u7279\u5f02\u5e76\u4e14\u53ef\u5177\u6709\u5f88\u5f3a\u7684\u81ea\u65cb\u8f68\u9053&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215],"tags":[3003],"class_list":["post-132813","post","type-post","status-publish","format-standard","hentry","category-jiedu","tag-iop"],"_links":{"self":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/132813"}],"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\/2"}],"replies":[{"embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=132813"}],"version-history":[{"count":6,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/132813\/revisions"}],"predecessor-version":[{"id":133791,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/132813\/revisions\/133791"}],"wp:attachment":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=132813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=132813"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=132813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}