Superconductivity out of a non-Fermi liquid: Free energy analysis
Superconductivity out of a non-Fermi liquid: Free energy analysis
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非费米液体的超导性:自由能分析
DOI:
10.1103/physrevb.106.144513
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发表时间:
2022
影响因子:
3.7
通讯作者:
Chubukov, Andrey V.
中科院分区:
文献类型:
--
作者:
Zhang, Shang-Shun;Wu, Yi-Ming;Abanov, Artem;Chubukov, Andrey V.
In this paper, we present an in-depth analysis of the condensation energyfor a superconductor in a situation when superconductivity emerges out of a non-Fermi liquid due to pairing mediated by a massless boson. This is the case for electronic-mediated pairing near a quantum-critical point in metal, for pairing in SYK-type models, and for phonon-mediated pairing in the properly defined limit, when the dressed Debye frequency vanishes. We consider a subset of these quantum-critical models, in which the pairing in a channel with a proper spatial symmetry is described by an effectivedimensional model with the effective dynamical interaction, whereis model-specific (themodel). In previous papers, we argued that the pairing in themodel is qualitatively different from that in a Fermi liquid, and the gap equation athas an infinite number of topologically distinct solutions,, where an integer, running between 0 and infinity, is the number of zeros ofon the positive Matsubara axis. This gives rise to the set of extrema ofat, of whichis the global minimum. The spectrumis discrete for a genericbut becomes continuous at. Here, we discuss in more detail the profile of the condensation energy near eachand the transformation from a discrete to a continuous spectrum at. We also discuss the free energy and the specific heat of themodel in the normal state.
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DOI:
10.1103/physrevb.50.17917
发表时间:
1994
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Yong Baek Kim;A. Furusaki;X. Wen;P. Lee
通讯作者:
P. Lee
影响因子:
4.4
作者:
K. Shima
通讯作者:
K. Shima
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
R. Haslinger;A. Chubukov
通讯作者:
A. Chubukov
影响因子:
3.7
作者:
E. Yuzbashyan;M. Kiessling;B. Altshuler
通讯作者:
B. Altshuler
DOI:
10.1103/physrevb.43.5355
发表时间:
1991
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Marsiglio;Carbotte
通讯作者:
Carbotte