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_kongjun新蟲 (小有名氣)
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[求助]
關(guān)于超導(dǎo)溫度計(jì)算 已有1人參與
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關(guān)于超導(dǎo)計(jì)算 請教各位大佬,計(jì)算超導(dǎo)轉(zhuǎn)變溫度最后結(jié)果如下是怎么回事,前面幾個(gè)溫度是亂碼,后面都是零,是不是說明沒有超導(dǎo) lambda = 0.107634 ( 0.107634) <log w>= 265.364K N(Ef)= 8.625493 at degauss=0.005 lambda = 0.082047 ( 0.082047) <log w>= 254.291K N(Ef)= 7.227878 at degauss=0.010 lambda = 0.071906 ( 0.071906) <log w>= 248.878K N(Ef)= 7.730625 at degauss=0.015 lambda = 0.088553 ( 0.088553) <log w>= 223.588K N(Ef)= 7.914003 at degauss=0.020 lambda = 0.133020 ( 0.133020) <log w>= 201.500K N(Ef)= 7.983379 at degauss=0.025 lambda = 0.184172 ( 0.184171) <log w>= 191.990K N(Ef)= 8.062881 at degauss=0.030 lambda = 0.224622 ( 0.224621) <log w>= 188.092K N(Ef)= 8.163629 at degauss=0.035 lambda = 0.250908 ( 0.250907) <log w>= 186.937K N(Ef)= 8.268483 at degauss=0.040 lambda = 0.266281 ( 0.266280) <log w>= 187.634K N(Ef)= 8.357640 at degauss=0.045 lambda = 0.275253 ( 0.275252) <log w>= 189.854K N(Ef)= 8.418870 at degauss=0.050 lambda omega_log T_c 0.10763 265.364 ********* 0.08205 254.291 ********* 0.07191 248.878 ********* 0.08855 223.588 ********* 0.13302 201.500 0.000 0.18417 191.990 0.000 0.22462 188.092 0.000 0.25091 186.937 0.001 0.26628 187.634 0.005 0.27525 189.854 0.008 |
專家顧問 (職業(yè)作家)
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專家經(jīng)驗(yàn): +83 |
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根據(jù)麥克米蘭方程計(jì)算出來的λ要大于0.1才行,λ小于0.1或者在0.1附近,μ取0.1附近的時(shí)候,體系會發(fā)散,導(dǎo)致你上面說的情況。一般情況下,認(rèn)為電聲耦合常數(shù)λ<1.1沒有電聲耦合超導(dǎo)。 使用qe計(jì)算超導(dǎo)溫度前請仔細(xì)閱讀下面的網(wǎng)頁。 https://www.quantum-espresso.org/Doc/ph_user_guide/node19.html |
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