{"id":203211,"date":"2020-06-06T06:26:28","date_gmt":"2020-06-05T22:26:28","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=203211"},"modified":"2020-06-05T23:26:46","modified_gmt":"2020-06-05T15:26:46","slug":"physical-review-letters-%e9%87%91%e5%b1%9e%e7%8e%bb%e7%92%83%e4%b8%ad%e9%ab%98%e9%a2%91%e6%a8%aa%e6%b3%a2%e5%a3%b0%e5%ad%90%e7%9a%84%e9%87%8d%e8%a6%81%e7%a0%94%e7%a9%b6%e8%bf%9b%e5%b1%95","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=203211","title":{"rendered":"Physical Review Letters: \u91d1\u5c5e\u73bb\u7483\u4e2d\u9ad8\u9891\u6a2a\u6ce2\u58f0\u5b50\u7684\u91cd\u8981\u7814\u7a76\u8fdb\u5c55"},"content":{"rendered":"

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

\u58f0\u5b50\u662f\u6676\u683c\u96c6\u4f53\u632f\u52a8\u7684\u5143\u6fc0\u53d1\u3002\u4e0a\u4e16\u7eaa30\u5e74\u4ee3\u4eba\u4eec\u901a\u8fc7\u5f15\u5165\u8fd9\u4e00\u91cf\u5b50\u5316\u6982\u5ff5\u5efa\u7acb\u7684\u6676\u4f53\u6750\u6599\u4e2d\u6676\u683c\u632f\u52a8\u7684\u52a8\u529b\u5b66\u7406\u8bba\uff0c\u6210\u529f\u5730\u89e3\u91ca\u4e86\u5f88\u591a\u76f8\u5173\u7684\u7269\u7406\u6027\u8d28\u4e0e\u7269\u7406\u73b0\u8c61\uff0c\u5982\u56fa\u4f53\u7684\u6bd4\u70ed\u3001\u7535\u963b\u3001BCS\u8d85\u5bfc\u673a\u5236\u7b49\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u81ea\u7136\u754c\u4e2d\u8fd8\u5b58\u5728\u5927\u91cf\u539f\u5b50\u6392\u5217\u65e0\u5e8f\u7684\u975e\u6676\u6001\u56fa\u4f53\uff0c\u5176\u539f\u5b50\u7684\u65e0\u5e8f\u6392\u5217\u9020\u6210\u4e86\u7a7a\u95f4\u5e73\u79fb\u5bf9\u79f0\u6027\u7834\u7f3a\uff0c\u4eba\u4eec\u5bf9\u5b83\u7684\u52a8\u529b\u5b66\u5c5e\u6027\u8ba4\u77e5\u975e\u5e38\u6709\u9650\u3002\u975e\u6676\u6001\u7684\u539f\u5b50\u632f\u52a8\u6a21\u5f0f\u662f\u600e\u6837\u7684\uff1f\u662f\u5426\u5b58\u5728\u9ad8\u9891\u58f0\u5b50\uff1f\u662f\u5426\u5b58\u5728\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\uff1f\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u8fd9\u4e9b\u57fa\u672c\u79d1\u5b66\u95ee\u9898\u4ecd\u60ac\u800c\u672a\u51b3\uff0c\u8fd9\u4e3b\u8981\u662f\u7531\u4e8e\u73b0\u6709\u7684\u5b9e\u9a8c\u6280\u672f\u4e0d\u80fd\u63d0\u4f9b\u6e05\u6670\u7684\u5b9e\u9a8c\u6570\u636e\uff0c\u7f3a\u4e4f\u6709\u6548\u7684\u5b9e\u9a8c\u89c2\u6d4b\u3002\u56e0\u6b64\uff0c\u5bf9\u975e\u6676\u6750\u6599\u4e2d\u539f\u5b50\u632f\u52a8\u7684\u7814\u7a76\u4e0d\u4ec5\u6709\u52a9\u4e8e\u975e\u6676\u4f53\u7cfb\u4e2d\u539f\u5b50\u632f\u52a8\u52a8\u529b\u5b66\u7406\u8bba\u6a21\u578b\u7684\u6784\u5efa\uff0c\u4ea6\u5c06\u6709\u52a9\u4e8e\u52a0\u6df1\u5bf9\u73bb\u7483\u6001\u672c\u8d28\u7684\u8ba4\u8bc6\uff0c\u800c\u540e\u8005\u88abScience\u6742\u5fd7\u5217\u4e3a\u672c\u4e16\u7eaa125\u4e2a\u6700\u5177\u6311\u6218\u6027\u7684\u79d1\u5b66\u96be\u9898\u4e4b\u4e00\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u7269\u7406\u7cfb\u738b\u5faa\u7406\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09\u6307\u5bfc\u535a\u58eb\u751f\u674e\u897f\u9633\uff08\u7b2c\u4e00\u4f5c\u8005\uff09\uff0c\u8054\u5408\u4e2d\u56fd\u4eba\u6c11\u5927\u5b66\u7269\u7406\u7cfb\u674e\u8302\u679d\u6559\u6388\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09\u3001\u535a\u58eb\u751f\u5f20\u534e\u5e73\uff08\u5171\u540c\u7b2c\u4e00\u4f5c\u8005\uff09\uff0c\u5357\u4eac\u7406\u5de5\u5927\u5b66\u5170\u53f8\u6559\u6388\uff08\u5171\u540c\u7b2c\u4e00\u4f5c\u8005\uff09<\/strong>\u7b49\u5408\u4f5c\u8005\uff0c\u4f7f\u7528\u975e\u5f39\u6027\u4e2d\u5b50\u6563\u5c04\u6280\u672f\u7ed3\u5408\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u5bf9\u5178\u578b\u9506\u94dc\u94dd\u91d1\u5c5e\u73bb\u7483\u4e2d\u7684\u539f\u5b50\u632f\u52a8\u52a8\u529b\u5b66\u8fdb\u884c\u4e86\u6df1\u5165\u7814\u7a76\u3002\u975e\u5f39\u6027\u4e2d\u5b50\u6563\u5c04\u5b9e\u9a8c\u5728\u5f53\u4eca\u4e16\u754c\u6700\u5148\u8fdb\u7684\u7f8e\u56fd\u6563\u88c2\u4e2d\u5b50\u6e90\u548c\u65e5\u672c\u6563\u88c2\u4e2d\u5b50\u6e90\u53ca\u7f8e\u56fd\u5149\u6e90\u7684\u5b9e\u9a8c\u8c31\u4eea\u8fdb\u884c\uff0c\u5b9e\u73b0\u4e86\u5728\u8f83\u5927\u52a8\u91cf\u8f6c\u79fb\u4e0b\u7684\u9ad8\u7cbe\u5ea6\u6d4b\u91cf\uff0c\u9996\u6b21\u5728\u975e\u6676\u4f53\u7cfb\u4e2d\u6d4b\u5f97\u4e86\u9ad8\u9891\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u632f\u52a8\u6a21\u3002\u5b9e\u9a8c\u89c2\u6d4b\u53d1\u73b0\uff0c\u8be5\u65e0\u5e8f\u6750\u6599\u4e2d\u4ea6\u5b58\u5728\u7c7b\u5468\u671f\u6027\u6676\u4f53\u6750\u6599\u4e2d\u58f0\u5b50\u52a8\u529b\u5b66\u5c5e\u6027\u7684\u539f\u5b50\u632f\u52a8\u6a21\u5f0f\uff0c\u65e2\u6a2a\u7eb5\u58f0\u5b66\u6a21\uff0c\u4f46\u65e0\u5149\u5b66\u632f\u52a8\u6a21\u3002\u8fdb\u4e00\u6b65\u5730\uff0c\u5b9e\u9a8c\u4e0a\u9996\u6b21\u628a\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u4ece\u5177\u6709\u8272\u6563\u7684\u9ad8\u9891\u6a2a\u7eb5\u6df7\u5408\u58f0\u5b50\u6001\u5bc6\u5ea6\u4e2d\u5206\u79bb\u51fa\u6765(\u56fe1\u3001\u56fe2)\uff0c\u8bc1\u5b9e\u4e86\u975e\u6676\u4e2d\u9ad8\u9891\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u7684\u5b58\u5728\u3002\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u53d1\u73b0\uff0c\u975e\u6676\u6750\u6599\u4e2d\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u534a\u5cf0\u5bbd\u4e0e\u9759\u6001\u7ed3\u6784\u56e0\u5b50\u4e4b\u95f4\u5b58\u5728\u666e\u9002\u7684\u6b63\u76f8\u5173\u5173\u7cfb(\u56fe3\u3001\u56fe4)\uff0c\u8868\u660e\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u5728\u7406\u89e3\u975e\u6676\u6750\u6599\u7684\u7ed3\u6784\u6027\u80fd\u5173\u7cfb\u4e2d\u626e\u6f14\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u4ee5\u4e0a\u7814\u7a76\u7ed3\u679c\u4e3a\u975e\u6676\u6001\u4e2d\u52a8\u529b\u5b66\u7406\u8bba\u6a21\u578b\u7684\u5efa\u7acb\u63d0\u4f9b\u4e86\u65b0\u7684\u5b9e\u9a8c\u8bc1\u636e\uff0c\u5bf9\u6df1\u5165\u8ba4\u8bc6\u73bb\u7483\u7684\u672c\u8d28\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002\u76f8\u5173\u7ed3\u679c\u4ee5\u9898\u540d\u4e3a\u201cObservation of high-frequency transverse phonons in metallic glasses\u201d\u53d1\u8868\u5728Physical Review Letters\u6742\u5fd7\u4e0a\u3002<\/p>\n

\u8be5\u7814\u7a76\u5f97\u5230\u4e86\u9999\u6e2f\u88d8\u69ce\u57fa\u91d1\uff089500034\uff09\u3001\u9999\u6e2f\u7814\u7a76\u8d44\u52a9\u5c40(JLFS\/P-102\/18)\u3001\u56fd\u5bb6\u81ea\u7136\u79d1\u5b66\u57fa\u91d1\uff0851571170, 51871120, 51631003, 11675255\uff09\u3001\u79d1\u6280\u90e8\u56fd\u5bb6\u91cd\u70b9\u7814\u53d1\u8ba1\u5212\uff082016YFA0401503, 2016YFA0401501\uff09\u3001973\u8ba1\u5212\uff082015CB856800\uff09\u7b49\u7684\u8d44\u52a9\u3002<\/p>\n

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

\u56fe<\/strong>1<\/strong>\uff1a\u5b9e\u9a8c\u6d4b\u91cf\u5ba4\u6e29\u4e0b<\/strong>Zr46<\/sub>Cu46<\/sub>Al8<\/sub><\/strong>\u91d1\u5c5e\u73bb\u7483\u7684\u52a8\u6001\u4e0e\u9759\u6001\u7ed3\u6784\u56e0\u5b50\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u4e2d\u5b50\u975e\u5f39\u6027\u6563\u5c04\u6240\u6d4b\u91cf\u7684\u52a8\u6001\u7ed3\u6784\u56e0\u5b50S(Q,E)\uff0c\u865a\u7ebf\u8868\u5f81\u65e0\u5e8f\u4f53\u7cfb\u4e2d\u7684\u51c6\u5e03\u91cc\u6e0a\u533a\uff0c\u5176\u51fd\u6570\u5173\u7cfb\u4e3a E<\/em>0*<\/sub>, \u5176\u4e2dQ<\/em>max<\/sub> = 2.74 \u00c5-1<\/sup> \u5bf9\u5e94\u9759\u6001\u7ed3\u6784\u56e0\u5b50\u7b2c\u4e00\u5cf0\u4f4d\uff0c\u800cE<\/em>0<\/sub> = 19.02 meV\u662f\u632f\u52a8\u7684\u7231\u56e0\u65af\u5766\u9891\u7387\uff1b(b)\u4e2d\u5b50\u6563\u5c04\u4e0eX\u5149\u6563\u5c04\u6240\u6d4b\u91cf\u7684\u9759\u6001\u7ed3\u6784\u56e0\u5b50S(Q)\uff0c\u4e24\u8005\u7b26\u5408\u5f88\u597d\uff0c\u7ed3\u679c\u5747\u8868\u660e\u6837\u54c1\u5904\u4e8e\u975e\u6676\u6001\u3002<\/p>\n

\u56fe<\/strong>2<\/strong>\uff1a\u4e2d\u5b50\u6563\u5c04\u7ed3\u5408\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u5bf9<\/strong>ZrCuAl<\/strong>\u91d1\u5c5e\u73bb\u7483\u4e2d\u7c7b\u58f0\u5b50\u5c5e\u6027\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u548c(c)\u5206\u522b\u4e3a\u975e\u5f39\u6027\u4e2d\u5b50\u6563\u5c04\u5b9e\u9a8c\u548c\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u5f97\u5230\u7684\u7c7b\u58f0\u5b50\u6001\u5bc6\u5ea6\u5206\u5e03\uff1b(b)\u548c(d)\u5206\u522b\u5bf9\u5e94(a)\u548c(c)\u4e2d\u6570\u636e\u7684\u4e8c\u6b21\u5fae\u5206\u7ed3\u679c\uff1b(e)\u548c(f)\u5206\u522b\u8ba1\u7b97\u5f97\u5230\u7684\u7eb5\u5411\u4e0e\u6a2a\u5411\u58f0\u5b50\u7684\u6001\u5bc6\u5ea6\u5206\u5e03\uff0c\u7ed3\u679c\u8868\u660e\uff0c\u6a2a\u58f0\u5b66\u652f\u5728Q= 3.8 \u00c5-1<\/sup>\u9644\u8fd1\u5177\u6709\u6700\u5927\u5f3a\u5ea6\u3002(a)(c)(e)(f)\u4e2d\u7684\u6a44\u6984\u8272\u548c\u6d0b\u7ea2\u8272\u66f2\u7ebf\u662f\u57fa\u4e8e\u65e0\u5e8f\u7cfb\u7edf\u7684\u8272\u6563\u7406\u8bba\u6240\u8ba1\u7b97\u7684\u7eb5\u5411\u548c\u6a2a\u5411\u58f0\u5b50\u7684\u8272\u6563\u5173\u7cfb\uff0c\u800c\u7eff\u7ebf\u548c\u9ec4\u7ebf\u5219\u662f\u901a\u8fc7\u8d85\u58f0\u5171\u632f\u6cd5\u6d4b\u91cf\u5f97\u5230\u7684\u7eb5\u5411\u548c\u6a2a\u5411\u58f0\u5b50\u5728\u957f\u6ce2\u6781\u9650\u4e0b\u7684\u7ebf\u6027\u8272\u6563\uff0c\u8fd9\u4e9b\u6570\u636e\u5728\u4f4eQ\u533a\u662f\u4e00\u81f4\u7684\u3002(c)(e)(f)\u4e2d\u7684\u84dd\u8272\u4e94\u89d2\u661f\u6807\u5fd7\u7740\u7b2c\u4e8c\u51c6\u5e03\u91cc\u6e0a\u533a\u7684\u8fb9\u754c\uff0c\u800c\u9ad8\u9891\u6a2a\u5411\u58f0\u5b50\u5728\u8fd9\u91cc\u51fa\u73b0\u3002<\/p>\n

\u56fe<\/strong>3<\/strong>\uff1a\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u6240\u63ed\u793a\u7684\u632f\u52a8\u7279\u6027<\/strong>\u3002<\/p>\n

\"\"<\/p>\n

\u603b\u7684\u4ee5\u53ca\u5404\u7c7b\u539f\u5b50\u7684\u632f\u52a8\u6001\u5bc6\u5ea6\uff0c\u4f5c\u4e3a\u5bf9\u6bd4\uff0c\u4e2d\u5b50\u975e\u5f39\u6027\u6563\u5c04\u6240\u6d4b\u91cf\u7684\u7ed3\u679c\u4e5f\u5728\u5176\u4e2d\uff1b(b)\u6bcf\u4e2a\u632f\u52a8\u6a21\u5f0f\u7684\u53c2\u4e0e\u5ea6\uff1b(c) E=17meV\u5904\u632f\u52a8\u6a21\u5f0f\u5bf9\u6a2a\u6ce2\u4e0e\u7eb5\u6ce2\u6295\u5f71\u540e\u7684\u6001\u5bc6\u5ea6\u968f\u6ce2\u77e2Q\u7684\u53d8\u5316\uff0c\u5cf0\u4f4d\u8868\u793a\u8fd9\u4e9b\u632f\u52a8\u6a21\u5f0f\u5177\u6709\u67d0\u4e9b\u7279\u6b8aQ\u503c\u7684\u5e73\u9762\u6ce2\u7279\u6027\uff1b(d)E<\/em> = 10, 17, 23 meV\u7b49\u4e09\u4e2a\u4e0d\u540c\u80fd\u91cf\u5904\u632f\u52a8\u6a21\u5f0f\u5bf9\u6a2a\u6ce2\u6295\u5f71\u540e\u7684\u6001\u5bc6\u5ea6\u968fQ\u503c\u7684\u53d8\u5316\uff0c\u53ef\u4ee5\u770b\u51fa\uff0cE=17meV\u5904\u7684\u632f\u52a8\u6a21\u5f0f\u5728Q= 3.8 \u00c5-1<\/sup>\u5904\u6709\u6a2a\u5411\u5e73\u9762\u6ce2\u7279\u5f81\uff0c\u800c\u5176\u4ed6\u4e24\u4e2a\u6ca1\u6709\u3002<\/p>\n

\u56fe<\/strong>4<\/strong>\uff1a\u58f0\u5b50\u534a\u5cf0\u5bbd\u4e0e\u9759\u6001\u7ed3\u6784\u56e0\u5b50\u4e4b\u95f4\u7684\u5173\u8054\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u5728\u91d1\u5c5e\u73bb\u7483\u4e2d\uff0c\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u534a\u5cf0\u5bbd\u548c\u9759\u6001\u7ed3\u6784\u56e0\u5b50\u4e4b\u95f4\u7684\u6b63\u76f8\u5173\u5173\u7cfb\uff0c\u7eb5\u58f0\u5b66\u652f\u58f0\u5b50\u4e0d\u5b58\u5728\u6b64\u5bf9\u5e94\u5173\u7cfb\uff1b(b)\u5728LJ\u52bf\u7684\u6a21\u578b\u73bb\u7483\u4f53\u7cfb\u4e2d\uff0c\u6a2a\u58f0\u5b66\u652f\u58f0\u5b50\u534a\u5cf0\u5bbd\u4ea6\u4e0e\u7ed3\u6784\u56e0\u5b50\u9759\u6001\u4e5f\u5177\u6709\u7c7b\u4f3c\u7684\u4e00\u4e00\u5bf9\u5e94\u5173\u7cfb\uff0c\u8bc1\u660e\u6b64\u5bf9\u5e94\u5173\u7cfb\u5177\u6709\u666e\u9002\u6027\u3002<\/p>\n

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

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\u6587\u732e\u94fe\u63a5<\/strong>\uff1aObservation of high-frequency transverse phonons in metallic glasses.\u00a0https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/PhysRevLett.124.225902<\/p>\n

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