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gswylq

木虫 (正式写手)

[求助] 就算出的超导温度取那一个合适?

采用lambda.in计算出超导温度,显示在lambda.out里面,对应不同的lambda有不同的超导温度,那么应该取那一个适合啊?写文章的话,应该取那一个可行?请大侠们给点建议?有人说是要看收敛的一个,不知道这个收敛指的是什么收敛?
lambda.in如下:

9.89  0.12  1    ! emax (something more than highest phonon mode in THz), degauss, smearing method
12
    0.000000 0.000000  0.000000 1            ! Number of q-points for which EPC is calculated,
    0.000000 0.000000  0.202303 1 ! the first q-point, use kpoints.x program to calculate
    0.000000 0.230940  0.000000 3  ! q-points and their weight
    0.000000 0.230940  0.202303 3  !
    0.000000 0.230940 -0.202303 3  ! 4th q-point, qx,qy,qz
    0.000000 0.461880  0.000000 3  !
    0.000000 0.461880  0.202303 3  !
    0.000000 0.461880 -0.202303 6  !
    0.200000 0.346410  0.000000 3  ! the last q-point
    0.200000 0.346410  0.202303 6   
    0.200000 0.577350  0.000000 3
    0.200000 0.577350  0.202303 3     
elph. 0.000000. 0.000000. 0.000000
elph. 0.000000. 0.000000. 0.202303 ! elph output file names,
elph. 0.000000. 0.230940. 0.000000 ! in the same order as the q-points before
elph. 0.000000. 0.230940. 0.202303
elph. 0.000000. 0.230940.-0.202303
elph. 0.000000. 0.461880. 0.000000
elph. 0.000000. 0.461880. 0.202303
elph. 0.000000. 0.461880.-0.202303
elph. 0.200000. 0.346410. 0.000000
elph. 0.200000. 0.346410. 0.202303
elph. 0.200000. 0.577350. 0.000000
elph. 0.200000. 0.577350. 0.202303                         ! Allen-Dynes formula for T_c (via \omega_log)
0.10                     ! \mu the Coloumb coefficient in the modified

lambda.out如下:
     lambda = 1.084221 (  1.084221)  <log w>=  307.706K  N(Ef)= 4.517842 at degauss=0.005
     lambda = 0.566371 (  0.566371)  <log w>=  310.745K  N(Ef)= 3.587039 at degauss=0.010
     lambda = 0.448274 (  0.448275)  <log w>=  312.233K  N(Ef)= 3.533603 at degauss=0.015
     lambda = 0.387066 (  0.387072)  <log w>=  312.263K  N(Ef)= 3.730138 at degauss=0.020
     lambda = 0.366829 (  0.366841)  <log w>=  310.417K  N(Ef)= 4.094577 at degauss=0.025
     lambda = 0.373813 (  0.373831)  <log w>=  308.541K  N(Ef)= 4.489714 at degauss=0.030
     lambda = 0.388700 (  0.388722)  <log w>=  307.529K  N(Ef)= 4.808704 at degauss=0.035
     lambda = 0.402516 (  0.402541)  <log w>=  307.161K  N(Ef)= 5.035879 at degauss=0.040
     lambda = 0.412947 (  0.412974)  <log w>=  307.129K  N(Ef)= 5.189173 at degauss=0.045
     lambda = 0.420063 (  0.420091)  <log w>=  307.208K  N(Ef)= 5.289633 at degauss=0.050
lambda        omega_log          T_c
   1.08422       307.706             22.056
   0.56637       310.745              4.603
   0.44827       312.233              1.575
   0.38707       312.263              0.611
   0.36683       310.417              0.399
   0.37381       308.541              0.462
   0.38870       307.529              0.621
   0.40252       307.161              0.794
   0.41295       307.129              0.943
   0.42006       307.208              1.052
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2楼2013-07-21 00:34:41
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gswylq

木虫 (正式写手)

引用回帖:
2楼: Originally posted by yanze at 2013-07-21 00:34:41
你这搞得太深奥了,是强关联多体效应吗

超导效应可能也算强关联多体效应吧
3楼2013-07-22 08:35:25
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