{"id":113034,"date":"2017-11-27T06:30:28","date_gmt":"2017-11-26T22:30:28","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=113034"},"modified":"2017-11-24T20:47:59","modified_gmt":"2017-11-24T12:47:59","slug":"science%ef%bc%9a%e9%99%8d%e4%bd%8e%e6%99%b6%e4%bd%93%e5%bd%a2%e6%a0%b8%e9%9a%8f%e6%9c%ba%e6%80%a7%e4%bb%a5%e8%8e%b7%e5%be%97%e4%ba%9a%e7%ba%b3%e7%a7%92%e7%ba%a7%e6%95%b0%e6%8d%ae%e5%ad%98%e5%82%a8","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=113034","title":{"rendered":"Science\uff1a\u964d\u4f4e\u6676\u4f53\u5f62\u6838\u968f\u673a\u6027\u4ee5\u83b7\u5f97\u4e9a\u7eb3\u79d2\u7ea7\u6570\u636e\u5b58\u50a8\u901f\u5ea6"},"content":{"rendered":"

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

\u76f8\u53d8\u5b58\u50a8\u5668\uff08PCRAM\uff09\u88ab\u89c6\u4e3a\u65b0\u4e00\u4ee3\u975e\u6613\u5931\u7535\u5b50\u5b58\u50a8\u5668\u4e4b\u4e00\u3002\u5176\u5229\u7528\u786b\u5316\u5408\u7269\u76f8\u53d8\u6750\u6599\u7684\u975e\u6676\u6001\u548c\u6676\u6001\u4e4b\u95f4\u5b58\u5728\u7684\u663e\u8457\u7535\u963b\u5dee\u5f02\uff0c\u5bf9\u6570\u5b57\u4fe1\u606f\u8fdb\u884c\u7f16\u7801\u3002\u76f8\u53d8\u6750\u6599\u5728\u9ad8\u6e29\u4e0b\u5728\u4e24\u4e2a\u6676\u4f53\u76f8\u4e4b\u95f4\u53ef\u4ee5\u8fdb\u884c\u5feb\u901f\u5e76\u53ef\u9006\u7684\u76f8\u53d8\uff0c\u540c\u65f6\u4e24\u4e2a\u6676\u4f53\u76f8\u5728\u5ba4\u5185\u4e0b\u5177\u6709\u5f88\u597d\u7684\u70ed\u7a33\u5b9a\u6027\u3002\u5373\u76f8\u53d8\u5b58\u50a8\u65e2\u5177\u6709\u5185\u5b58\uff08DRAM\uff09\u5feb\u901f\u8bfb\u5165\u7684\u80fd\u529b\uff0c\u53c8\u5177\u6709\u95ea\u5b58\u56fa\u6001\u786c\u76d8\u7684\u957f\u65f6\u95f4\u6570\u636e\u4fdd\u6301\u529b\u3002\u76f8\u53d8\u5b58\u50a8\u5668\u8d85\u9ad8\u901f\u7684\u64e6\u9664\u8fc7\u7a0b\uff08\u975e\u6676\u5316\uff09\u53ef\u4ee5\u901a\u8fc7\u5668\u4ef6\u7684\u70ed\u529b\u5b66\u8bbe\u8ba1\u6765\u5b8c\u6210\uff0c\u7136\u800c\u5199\u5165\u8fc7\u7a0b\uff08\u7ed3\u6676\u5316\uff09\u5219\u4f9d\u8d56\u4e8e\u6750\u6599\u672c\u8eab\u7684\u5c5e\u6027\u3002\u76ee\u524d\u5546\u7528\u76f8\u53d8\u6750\u6599\u9517\u9511\u78b2(GeSbTe)\u6700\u5feb\u7684\u5199\u5165\u901f\u5ea6\u4e3a10\u7eb3\u79d2\uff0c\u5982\u4f55\u8fdb\u4e00\u6b65\u63d0\u5347\u8be5\u8bfb\u5199\u901f\u5ea6\u4e00\u76f4\u662f\u4e1a\u5185\u91cd\u70b9\u5173\u6ce8\u7684\u95ee\u9898\u3002<\/p>\n

\u00a0<\/strong>\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u4e2d\u79d1\u9662\u4e0a\u6d77\u5fae\u7cfb\u7edf\u4e0e\u4fe1\u606f\u6280\u672f\u7814\u7a76\u6240\u9976\u5cf0\u526f\u7814\u7a76\u5458<\/strong>\u548c\u897f\u5b89\u4ea4\u901a\u5927\u5b66\u7684\u5f20\u4f1f\u6559\u6388<\/strong>\u5408\u4f5c\u5f00\u5c55\u4e86\u76f8\u5173\u7814\u7a76\u5de5\u4f5c\uff0c\u5176\u7814\u7a76\u6210\u679c\u4ee5\u201cReducing the stochasticity of crystal nucleation to enable subnanosecond memory writing<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Science<\/strong>\u4e0a\u3002\u672c\u6587\u901a\u8fc7\u6750\u6599\u8ba1\u7b97\u8bbe\u8ba1\u7684\u65b9\u6cd5\u6765\u8c03\u63a7\u76f8\u53d8\u6750\u6599\u7684\u6676\u6838\u5f62\u6210\u901f\u7387\uff0c\u5408\u6210\u65b0\u578b\u76f8\u53d8\u6750\u6599\u94aa\u9511\u78b2(ScSbTe)\uff0c\u5927\u5e45\u964d\u4f4e\u5f62\u6838\u65f6\u95f4\uff0c\u8fbe\u5230\u8d85\u9ad8\u901f\u7684\u5199\u5165\u901f\u5ea6\uff0c\u4ec5\u4e3a0.7\u7eb3\u79d2\u3002\u540c\u65f6\u94aa\u9511\u78b2\u5668\u4ef6\u7684\u64cd\u4f5c\u529f\u8017\u76f8\u6bd4\u4e8e\u4f20\u7edf\u9517\u9511\u78b2\u5668\u4ef6\u964d\u4f4e\u4e86\u8fd190%\u3002\u901a\u8fc7\u6750\u6599\u8ba1\u7b97\uff0c\u7814\u7a76\u4eba\u5458\u6e05\u6670\u5730\u63ed\u793a\u4e86\u94aa\u9511\u78b2\u8d85\u5feb\u7ed3\u6676\u5316\u4ee5\u53ca\u8d85\u4f4e\u529f\u8017\u7684\u5fae\u89c2\u673a\u7406\u3002<\/p>\n

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

\u56fe1\uff1a\u6750\u6599\u7b5b\u9009\u3002<\/strong><\/p>\n

\"\"<\/p>\n

\uff08A\uff09\u5728\u5404\u79cd\u78b2\u5316\u7269\u4e2d\u7b5b\u9009\u4e0e\u7acb\u65b9\u76f8\u78b2\u5316\u9511\u51e0\u4f55\u7ed3\u6784\u5339\u914d\u7684\u6750\u6599\u3002<\/p>\n

\uff08B\uff09\u78b2\u5316\u9511\u4e0e\u7b5b\u9009\u800c\u5f97\u7684\u78b2\u5316\u94aa\u4e4b\u95f4\u7684\u5bf9\u6bd4\uff0c\u540e\u8005\u5177\u5907\u66f4\u5f3a\u7684\u5316\u5b66\u952e\u3002<\/p>\n

\u56fe2\uff1a\u7acb\u65b9\u76f8\u94aa\u9511\u78b2SST\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(A) ~300nm\u539a\u7684GST\u548cSST\u8584\u819c\u5728\u540c\u6837\u4e3a10\u2103\/min\u7684\u52a0\u70ed\u901f\u7387\u4e0b\uff0c\u8868\u9762\u7535\u963b\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u60c5\u51b5\u3002(B)270\u2103\u4e0b\u9000\u706b\u7684~20nm\u539aSST\u8584\u819c\u7684\u900f\u5c04\u7535\u955c\u56fe\u50cf\u3002<\/p>\n

(C)\u56fe(B)\u5bf9\u5e94\u7684\u9009\u533a\u7535\u5b50\u884d\u5c04\u56fe\u3002<\/p>\n

(D-F)\u4ece(B)\u4e2d\u9009\u53d6\u7684\u4e09\u4e2a\u5178\u578b\u6676\u7c92\u7684\u9ad8\u5206\u8fa8\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\u56fe\u50cf\uff0c\u4f9d\u6b21\u6cbf[1-11]\u3001[011]\u548c[001]\u8f74\u3002<\/p>\n

\u56fe3\uff1a\u76f8\u53d8\u5b58\u50a8\u5668\u4ef6\u6027\u80fd\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(A)\u94aa\u9511\u78b2SST\u548c\u9517\u9511\u78b2GST\u76f8\u53d8\u5b58\u50a8\u5668\u8bbe\u5907\u5728\u540c\u4e00\u51e0\u4f55\u5c3a\u5bf8\u4e0b\u5199\u5165\u901f\u5ea6\u968f\u7535\u538b\u7684\u53d8\u5316\u5173\u7cfb\u3002\u5185\u90e8\u63d2\u56fe\u4e3a\u5668\u4ef6\u7ed3\u6784\u56fe\uff0c\u5e95\u7aef\u63a5\u89e6\u7535\u6781\u4e0a\u90e8\u7ea2\u8272\u8611\u83c7\u578b\u533a\u57df\u4e3a\u76f8\u53d8\u64cd\u4f5c\u533a\u57df\u3002<\/p>\n

(B) \u5468\u671f\u5faa\u73af\u6027\uff1a\u94aa\u9511\u78b2\u5668\u4ef6\u53ef\u4ee5\u91cd\u590d\u8fdb\u884c\u8d85\u5feb\u5199\u5165SET\u548c\u64e6\u9664RESET\u64cd\u4f5c\uff0c\u81f3\u5c11\u5b8c\u6210105<\/sup>\u6b21\u5faa\u73af\u3002<\/p>\n

\u56fe4\uff1a\u57fa\u4e8e\u5bc6\u5ea6\u6cdb\u51fd\u7684\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(A) \u975e\u6676\u94aa\u9511\u78b2SST\u548c\u9517\u9511\u78b2GST\u5728\u96f6\u6e29\u4e0b\u7684\u7ed3\u6784\u5206\u6790\u3002<\/p>\n

(B)\u548c(C)\u4e3a600K\u65f6SST\u548cGST\u4e2d\u56db\u5143\u73af\u7684\u7a33\u5b9a\u6027\u5206\u6790\u3002<\/p>\n

(D) 600K\u4e0bSST\u7684\u5fae\u89c2\u7ed3\u6676\u8fc7\u7a0b\u3002<\/p>\n

\u3010\u603b\u7ed3\u3011<\/strong><\/p>\n

\u8fd9\u4e00\u7814\u7a76\u6210\u679c\u5bf9\u6df1\u5165\u7406\u89e3\u548c\u8c03\u63a7\u975e\u6676\u6001\u6750\u6599\u7684\u5f62\u6838\u4e0e\u751f\u957f\u673a\u5236\u5177\u6709\u91cd\u8981\u7684\u6307\u5bfc\u610f\u4e49\uff0c\u5e76\u4e3a\u5b9e\u73b0\u6211\u56fd\u81ea\u4e3b\u7684\u901a\u7528\u5b58\u50a8\u5668\u6280\u672f\u5960\u5b9a\u4e86\u57fa\u7840\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Reducing the stochasticity of crystal nucleation to enable subnanosecond memory writing<\/strong><\/a> (<\/strong>Science\uff0c<\/strong>2017\uff0cDOI:10.1126\/science.aao3212 )<\/strong><\/p>\n

\u5ef6\u4f38\u9605\u8bfb<\/strong><\/p>\n

    \n
  1. W. Zhang, M. Wuttig, et al.<\/em> Nat. Mater.<\/em><\/strong> 11, 952-956 (2012). Role of vacancies in metal-insulator transitions of crystalline phase-change materials.<\/li>\n
  2. M. Zhu, F. Rao, et al.<\/em> Nat. Commun.<\/em><\/strong> 5, 4086 (2014). One order of magnitude faster phase change at reduced power in Ti-Sb-Te.<\/li>\n
  3. F. Rao, Z. Song, et al. Nat. Commun.<\/strong> <\/em>6, 10040 (2015). Direct observation of titanium-centered octahedra in titanium-antimony-tellurium phase-change material.<\/li>\n
  4. W. Zhang, E. Ma, et al.<\/em> MRS Bulletin<\/em><\/strong> 40, 856-865 (2015). Density functional theory guided advances in phase-change materials and memories.<\/li>\n
  5. I. Ronneberger, W. Zhang, et al. Adv. Funct. Mater.<\/strong><\/em> 25, 6407-6413 (2015). Crystallization properties of the Ge2Sb2Te5 phase-change compound from advanced simulations.<\/li>\n
  6. Y. Zheng, F. Rao, et al.<\/em> Nano Research<\/em><\/strong> 9, 3453-3462 (2016). Direct observation of metastable face-centered cubic Sb2Te3 crystal.<\/li>\n<\/ol>\n

    \u00a0<\/b><\/strong>\u672c\u6587\u7531\u6750\u6599\u4eba\u8ba1\u7b97\u6750\u6599\u7ec4Isobel\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

    \u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1aRDD-2011-CHERISH\uff0c\u4efb\u4e39\u4e39\uff0c\u6211\u4eec\u4f1a\u9080\u8bf7\u5404\u4f4d\u8001\u5e08\u52a0\u5165\u4e13\u5bb6\u7fa4\u3002<\/b><\/strong><\/p>\n

    \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\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n

    \u4eea\u5668\u8bbe\u5907\u3001\u8bd5\u5242\u8017\u6750\u3001\u6750\u6599\u6d4b\u8bd5\u3001\u6570\u636e\u5206\u6790\uff0c\u627e\u6750\u6599\u4eba\u3001\u4e0a\u6d4b\u8bd5\u8c37<\/a>\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u3010\u5f15\u8a00\u3011 \u76f8\u53d8\u5b58\u50a8\u5668\uff08PCRAM\uff09\u88ab\u89c6\u4e3a\u65b0\u4e00\u4ee3\u975e\u6613\u5931\u7535\u5b50\u5b58\u50a8\u5668\u4e4b\u4e00\u3002\u5176\u5229\u7528\u786b\u5316\u5408\u7269\u76f8\u53d8\u6750\u6599\u7684\u975e\u6676\u6001\u548c\u6676\u6001\u4e4b\u95f4\u5b58\u5728\u7684\u663e\u8457\u7535\u963b\u5dee\u5f02\uff0c\u5bf9\u6570\u5b57\u4fe1\u606f\u8fdb\u884c\u7f16\u7801\u3002\u76f8\u53d8\u6750\u6599\u5728\u9ad8…<\/p>\n","protected":false},"author":4765,"featured_media":113028,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215],"tags":[155,97],"class_list":["post-113034","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jiedu","tag-science","tag-computation"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/113034"}],"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\/4765"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=113034"}],"version-history":[{"count":24,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/113034\/revisions"}],"predecessor-version":[{"id":113942,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/113034\/revisions\/113942"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/media\/113028"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=113034"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=113034"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=113034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}