- #1
leoant
- 35
- 0
Dear all:
Now I am trying hard to interpret superconductivity in MgB2, and when reading some paper such as J.Kortus et. al, J.M.An et. al on PRL/PRB, I find that their way to weigh transition temperature is different, for instance, in J.Kortus's paper(PRL86,4656(2001)), they use McMillan-Hopfield formulate, while in J.M.An's paer(PRL86, 4366(2001)), they use Allen-Dynes's equation( relatet to "deformation potential due to frozen-in phonon?), and some other papers use Eliasberg theory, here I am a little confused:
1 which is more precise?
2 is there any difference between them?(certainly, but please outline the differences on a more general aspects, for example, strong electron-phonon coupling, etc)
3 please refer me to one or two classic book which would include all or part of these theories.
Thank you all.
Now I am trying hard to interpret superconductivity in MgB2, and when reading some paper such as J.Kortus et. al, J.M.An et. al on PRL/PRB, I find that their way to weigh transition temperature is different, for instance, in J.Kortus's paper(PRL86,4656(2001)), they use McMillan-Hopfield formulate, while in J.M.An's paer(PRL86, 4366(2001)), they use Allen-Dynes's equation( relatet to "deformation potential due to frozen-in phonon?), and some other papers use Eliasberg theory, here I am a little confused:
1 which is more precise?
2 is there any difference between them?(certainly, but please outline the differences on a more general aspects, for example, strong electron-phonon coupling, etc)
3 please refer me to one or two classic book which would include all or part of these theories.
Thank you all.