{"id":252846,"date":"2023-07-13T08:15:08","date_gmt":"2023-07-13T00:15:08","guid":{"rendered":"\/\/m.iemloyee.com\/?p=252846"},"modified":"2023-07-13T08:15:08","modified_gmt":"2023-07-13T00:15:08","slug":"%e4%bb%8e0%e5%88%b01%e8%b6%85%e5%af%bc%e9%87%8d%e5%a4%a7%e7%aa%81%e7%a0%b4%ef%bc%81%e4%b8%ad%e5%b1%b1%e5%a4%a7%e5%ad%a6%e6%b8%85%e5%8d%8e%e5%a4%a7%e5%ad%a6%ef%bc%8c%e5%86%8d","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=252846","title":{"rendered":"\u201c\u4ece0\u52301\u201d\u8d85\u5bfc\u91cd\u5927\u7a81\u7834\uff01\u4e2d\u5c71\u5927\u5b66&\u6e05\u534e\u5927\u5b66\uff0c\u518d\u53d1\u4e00\u7bc7Nature\uff01"},"content":{"rendered":"
\u3010\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n \u94dc\u9178\u76d0\u4e2d\u7684\u9ad8\u8f6c\u53d8\u6e29\u5ea6\uff08T<\/i><\/em>c<\/i><\/sub><\/em>\uff09\u8d85\u5bfc\u6027\u6765\u81ea\u4e8e\u63ba\u6742\u5230Mott\u7edd\u7f18\u6001\u7684\u7a7a\u7a74\u8f7d\u6d41\u5b50\uff0c\u5176\u5177\u6709\u534a\u586b\u5145\u7684Cu 3d9<\/sup>\u7535\u5b50\u7ed3\u6784\u548cS=1\/2\u81ea\u65cb\u6001\u3002\u968f\u7740\u8f7d\u6d41\u5b50\u63ba\u6742\u548c\u5c42\u5185Cu-O\u7535\u5b50\u03c3-\u80fd\u5e26\uff0c\u5f62\u6210\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u76f8\u3002\u540c\u65f6\uff0c\u56f4\u7ed5\u6700\u4f18\u63ba\u6742\uff0c\u5df2\u7ecf\u786e\u5b9a\u8d85\u5bfc\u6027\u4e0e\u6e29\u533a\u5bf9\u89d2\u7ebf\u5468\u56f4\u7684\u95f4\u9699\u8282\u70b9\u5177\u6709d\u6ce2\u914d\u5bf9\uff0c\u4e14\u7531\u89d2\u8fde\u63a5\u7684CuO6<\/sub>\u516b\u9762\u4f53\u548cLnO\uff08Ln =\u9567\u7cfb\u5316\u7269\uff09\u5c42\u7ec4\u6210\u7684\u5c42\u72b6\u7ed3\u6784\u662f\u9ad8\u6e29\u8d85\u5bfc\u6750\u6599\u7684\u5171\u540c\u7279\u5f81\u3002\u4eba\u4eec\u4e00\u76f4\u5728\u52aa\u529b\u5bfb\u627e\u7c7b\u4f3c\u94dc\u9178\u76d0\u7684\u6c27\u5316\u954d\u5316\u5408\u7269\u4e2d\u7684\u8d85\u5bfc\u6027\uff0c\u65e0\u9650\u5c42\u954d\u9178\u76d0\u662f\u954d\u9178\u76d0\u4e4b\u4e00\u3002\u94dc\u9178\u76d0\u7684\u9ad8\u8f6c\u53d8\u6e29\u5ea6\uff08\u9ad8-T<\/i><\/em>c<\/i><\/sub><\/em>\uff09\u8d85\u5bfc\u6027\u5df2\u7ecf\u88ab\u53d1\u73b0\u4e8630\u591a\u5e74\uff0c\u4f46\u5176\u6f5c\u5728\u7684\u673a\u5236\u4ecd\u7136\u662f\u4e00\u4e2a\u8c1c\u3002\u94dc\u9178\u76d0\u4f5c\u4e3a\u552f\u4e00\u7684\u975e\u5e38\u89c4\u8d85\u5bfc\u65cf\uff0c\u5176T<\/i><\/em>c<\/i><\/sub><\/em>s<\/i><\/em>\u9ad8\u4e8e\u6db2\u6c2e\u6cb8\u817e\u6e29\u5ea6\uff0877 K\uff09\u3002<\/p>\n \u3010\u6210\u679c\u63a0\u5f71\u3011<\/b><\/strong><\/p>\n \u5728\u6b64\uff0c\u4e2d\u5c71\u5927\u5b66<\/strong>\u738b\u731b\u6559\u6388\u548c\u6e05\u534e\u5927\u5b66\u5f20\u5e7f\u94ed\u6559\u6388<\/strong>\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u5728\u9ad8\u538b\u7535\u963b\u548c\u4e92\u611f\u78c1\u5316\u7387\u6d4b\u91cf\u4e2d\uff0c\u89c2\u5bdf\u5230\u9ad8\u538b\u7535\u963b\u548c\u4e92\u611f\u78c1\u5316\u7387\u572814.0 ~ 43.5 GPa\u4e4b\u95f4\uff0c\u6700\u5927T<\/i><\/em>c<\/i><\/sub><\/em>\u4e3a80 K\u7684La3<\/sub>Ni2<\/sub>O7<\/sub>\u5355\u6676\u7684\u8d85\u5bfc\u7279\u5f81\u3002\u9ad8\u538b\u4e0b\u8d85\u5bfc\u76f8\u5448\u73b0Fmmm\u7a7a\u95f4\u7fa4\u7684\u6b63\u4ea4\u7ed3\u6784\uff0cNi\u9633\u79bb\u5b50\u76843dx2<\/sup>-y2<\/sup>\u548c3dz2<\/sup>\u8f68\u9053\u4e0e\u6c27\u76842p\u8f68\u9053\u5f3a\u6df7\u5408\u3002\u540c\u65f6\uff0c\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u8ba1\u7b97\u8868\u660e\uff0c\u8d85\u5bfc\u6027\u4e0e\u8d39\u7c73\u80fd\u7ea7\u4e0b\u03c3-\u80fd\u5e26\u7684\u91d1\u5c5e\u5316\u4e00\u81f4\u51fa\u73b0\uff0c\u8be5\u5e26\u75313dz2<\/sup>\u8f68\u9053\u548c\u8fde\u63a5Ni-O\u53cc\u5c42\u7684\u9876\u7aef\u6c27\u7ec4\u6210\u3002\u56e0\u6b64\uff0c\u672c\u6587\u7684\u53d1\u73b0\u4e0d\u4ec5\u4e3a\u7814\u7a76Ruddlesden-Popper\u53cc\u5c42\u9499\u949b\u77ff\u954d\u9178\u76d0\u7684\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u6027\u63d0\u4f9b\u4e86\u91cd\u8981\u7ebf\u7d22\uff0c\u800c\u4e14\u4e3a\u7814\u7a76\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u673a\u5236\u63d0\u4f9b\u4e86\u65b0\u7684\u5316\u5408\u7269\u5bb6\u65cf\u3002\u8fd9\u662f\u76ee\u524d\u53d1\u73b0\u7684\u7b2c\u4e8c\u79cd\u6db2\u6c2e\u6e29\u533a\u8d85\u5bfc\u6750\u6599\uff0c\u5177\u6709\u201c\u4ece0\u52301\u201d\u7684\u7a81\u7834\u6027\u8d28\uff0c\u63a8\u52a8\u4e86\u7834\u89e3\u9ad8\u6e29\u8d85\u5bfc\u673a\u7406\u7684\u8fdb\u7a0b\u3002<\/p>\n \u00a0\u76f8\u5173\u7814\u7a76\u6210\u679c\u4ee5\u201cSignatures of superconductivity near 80 K in a nickelate under high pressure<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Nature<\/strong>\u4e0a\u3002 \u3010\u6838\u5fc3\u521b\u65b0\u70b9\u3011<\/b><\/strong><\/p>\n 1.\u4f5c\u8005\u89c2\u5bdf\u5230\u9ad8\u538b\u7535\u963b\u548c\u4e92\u611f\u78c1\u5316\u7387\u572814.0 ~ 43.5 GPa\u4e4b\u95f4\uff0c\u6700\u5927T<\/i><\/em>c<\/i><\/sub><\/em>\u4e3a80 K\u7684La3<\/sub>Ni2<\/sub>O7<\/sub>\u5355\u6676\u7684\u8d85\u5bfc\u7279\u5f81\uff1b<\/p>\n 2.\u672c\u6587\u7684\u53d1\u73b0\u4e0d\u4ec5\u4e3a\u7814\u7a76Ruddlesden-Popper\u53cc\u5c42\u9499\u949b\u77ff\u954d\u9178\u76d0\u7684\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u6027\u63d0\u4f9b\u4e86\u91cd\u8981\u7ebf\u7d22\uff0c\u800c\u4e14\u4e3a\u7814\u7a76\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u673a\u5236\u63d0\u4f9b\u4e86\u65b0\u7684\u5316\u5408\u7269\u5bb6\u65cf\u3002<\/p>\n \u3010\u6570\u636e\u6982\u89c8\u3011<\/b><\/strong> \u56fe<\/b><\/strong>\u4e00<\/b><\/strong>\u3001\u52a0\u538bLa<\/b><\/strong>3<\/b><\/sub><\/strong>Ni<\/b><\/strong>2<\/b><\/sub><\/strong>O<\/b><\/strong>7<\/b><\/sub><\/strong>\u7684\u7ed3\u6784\u8868\u5f81<\/b><\/strong>\u00a92023 Springer Nature<\/b><\/strong> \u56fe<\/b><\/strong>\u4e8c\u3001<\/b><\/strong>La<\/b><\/strong>3<\/b><\/sub><\/strong>Ni<\/b><\/strong>2<\/b><\/sub><\/strong>O<\/b><\/strong>7<\/b><\/sub><\/strong>\u57281.6\u548c29.5 GPa\u6761\u4ef6\u4e0b\u7684\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u8ba1\u7b97\u00a92023 Springer Nature<\/b><\/strong> \u56fe<\/b><\/strong>\u4e09<\/b><\/strong>\u3001\u538b\u529b\u4e0bLa<\/b><\/strong>3<\/b><\/sub><\/strong>Ni<\/b><\/strong>2<\/b><\/sub><\/strong>O<\/b><\/strong>7<\/b><\/sub><\/strong>\u5355\u6676\u7684\u8d85\u5bfc\u8dc3\u8fc1<\/b><\/strong>\u00a92023 Springer Nature<\/b><\/strong> \u56fe<\/b><\/strong>\u56db<\/b><\/strong>\u3001La<\/b><\/strong>3<\/b><\/sub><\/strong>Ni<\/b><\/strong>2<\/b><\/sub><\/strong>O<\/b><\/strong>7<\/b><\/sub><\/strong>\u5355\u6676\u7684\u9ad8\u6e29\u8d85\u5bfc\u6027\u76f8\u56fe<\/b><\/strong>\u00a92023 Springer Nature<\/b><\/strong><\/p>\n \u3010\u6210\u679c\u542f\u793a\u3011<\/b><\/strong><\/p>\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u672c\u6587\u8bc1\u660e\u4e86\u5728Ruddlesden-Popper\uff08RP\uff09\u53cc\u5c42\u9499\u949b\u77ff\u954d\u9178\u76d0La3<\/sub>Ni2<\/sub>O7<\/sub>\u4e2d\uff0cNi2.5+<\/sup>\uff083d<\/i><\/em>7.5<\/i><\/sup><\/em>\uff09\u7684\u7535\u5b50\u5360\u4f4d\u53ef\u4ee5\u6a21\u62df\u7a7a\u7a74\u63ba\u6742\u53cc\u5c42\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u94dc\u9178\u76d0\u4e2d\u7684Cu2+<\/sup>\uff0c\u8fd9\u662f\u7531\u4e8e\u901a\u8fc7\u9876\u7aef\u6c27\u9634\u79bb\u5b50\u5b58\u57283dz2<\/sup>\u8f68\u9053\u7684\u5f3a\u5c42\u95f4\u8026\u5408\uff0c\u8fd9\u79cd\u5c42\u95f4\u8026\u5408\u5bfc\u81f4\u5728\u8d39\u7c73\u80fd\u7ea7\u4ee5\u4e0b\u548c\u4e4b\u4e0a\u5f62\u6210\u03c3\u952e\u548c\u53cd\u952e\u5e26\u3002\u65bd\u52a0\u9ad8\u538b\u53ef\u4ee5\u901a\u8fc73dz2<\/sup>\u8f68\u9053\u4e0a\u7684\u7a7a\u7a74\u63ba\u6742\u548c3dx2<\/sup>-y2<\/sup>\u8f68\u9053\u4e0a\u7684\u7535\u5b50\u63ba\u6742\u5b9e\u73b0\u8d39\u7c73\u80fd\u7ea7\u4ee5\u4e0b\u7684\u91d1\u5c5e\u5316\u3002\u4f46\u8fd9\u4e9b\u7279\u5f81\u4e0e\u65e0\u9650\u5c42\u8d85\u5bfc\u954d\u9178\u76d0\u6709\u660e\u663e\u7684\u4e0d\u540c\uff0c\u5728\u65e0\u9650\u5c42\u8d85\u5bfc\u954d\u9178\u76d0\u4e2d\uff0c\u6c27\u76842p\u8f68\u9053\u7684\u7535\u5b50\u6001\u8fdc\u4f4e\u4e8e\u8d39\u7c73\u80fd\u7ea7\uff0c\u5e76\u4e14\u7531\u4e8e\u5b83\u4eec\u7684\u4f4d\u7f6e\u80fd\u91cf\u7684\u8f83\u5927\u5206\u79bb\uff0c\u5177\u6709\u5927\u5927\u51cf\u5c11\u76843d-2p\u6df7\u5408\u3002\u4ece\u5b9e\u9a8c\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0cT<\/i><\/em>c<\/i><\/sub><\/em>\u4e0e\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u94dc\u8d85\u5bfc\u4f53\u7684T<\/i><\/em>c<\/i><\/sub><\/em>\u76f8\u5f53\uff0c\u5e76\u4e14\u9ad8\u4e8e\u94c1\u57fa\u8d85\u5bfc\u4f53\u7684T<\/i><\/em>c<\/i><\/sub><\/em>\u3002\u636e\u6240\u77e5\uff0c\u8fd9\u662f\u7b2c\u4e00\u4e2a\u5173\u4e8e\u4f53\u76f8\u954d\u9178\u76d0\u548c\u954d\u9178\u76d0RP\u76f8\u8d85\u5bfc\u7279\u5f81\u7684\u5b9e\u9a8c\u62a5\u544a\u3002\u7814\u7a76\u7ed3\u679c\u8868\u660e\u6c27\u5316\u954d\u4f53\u7cfb\u662f\u5bfb\u627e\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u4f53\u548c\u63a2\u7d22\u5176\u975e\u5e38\u89c4\u9ad8T<\/i><\/em>c<\/i><\/sub><\/em>\u8d85\u5bfc\u673a\u5236\u7684\u4e00\u4e2a\u4ee4\u4eba\u53ef\u4fe1\u7684\u5e73\u53f0\u3002<\/p>\n<\/p>\n
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