Existence of both s and d -wave solutions of Eliashberg equations
TLDR
In this paper, the authors solved the Eliashberg equations in the case of strong anisotropic electron-phonon coupling and low energy cutoff in a simplified model representing the Fermi Surface of (CuO2)n planes.Abstract:
We solve Eliashberg equations in the case of strong anisotropic electron-phonon coupling and low energy cutoff. In a simplified model representing the Fermi Surface of (CuO2)n planes, we exhibit ad-wave solution as well as a generalizeds-wave one.read more
Citations
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A survey of the Van Hove scenario for high-tc superconductivity with special emphasis on pseudogaps and striped phases
TL;DR: The Van Hove singularity (VHS) provides a paradigm for the study of the role of peaks in the density of states (dos) on electronic properties, and it appears to play a major role in the physics of the high-Tc superconductors, particularly since recent photoemission studies have found that the VHS is close to the Fermi level in most of the cuprates near the composition of optimum Tc as mentioned in this paper.
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Interplay of electron–phonon interaction and strong correlations: the possible way to high-temperature superconductivity
TL;DR: In this article, it was shown that strong electronic correlations in HTS oxides renormalize the electron-phonon interaction, as well as other charge scattering processes related to charge fluctuations, in such a way that the forward scattering peak (FSP) appears, while the backward scattering is suppressed.
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High-temperature superconductivity: the current state
TL;DR: In this article, a detailed analysis of the current knowledge of the subject suggests that when in the normal state, superconducting cuprates behave very much the same as 'conventional' metals.
Journal ArticleDOI
s- and d-wave symmetries of the solutions of the Eliashberg equations
TL;DR: In this paper, the Coulomb pseudopotential plays the crucial role of providing the repulsion needed to favor the d-wave symmetry, and the key parameter that allows very anisotropic solutions even with very strong coupling is the small angular range of the interaction due to predominantly electron-phonon forward scattering that is found in high-T c superconductors.
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Forward scattering peak in the electron-phonon interaction and impurity scattering of cuprate superconductors
M. L. Kulić,O. V. Dolgov +1 more
TL;DR: In this paper, the role of the electron-phonon interaction (EPI) in explaining the normal state properties and pairing mechanism in high-Tc superconductors (HTSC) is discussed.
References
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Transition temperature of strong-coupled superconductors.
TL;DR: In this paper, the superconducting transition temperature is calculated as a function of the electron-phonon and electron-electron coupling constants within the framework of strong coupling theory.
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Experimental determination of the superconducting pairing state in YBCO from the phase coherence of YBCO-Pb dc SQUIDs.
TL;DR: A Comment on the Letter by D. A. Wollman is posted on the website of the American Academy of Arts and Sciences.
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Anomalously large gap anisotropy in the a - b plane of Bi 2 Sr 2 CaCu 2 O 8 + δ
Zhi-Xun Shen,Zhi-Xun Shen,Daniel Dessau,Daniel Dessau,Barrett Wells,Barrett Wells,D. M. King,D. M. King,W. E. Spicer,W. E. Spicer,A. J. Arko,A. J. Arko,Daniel S. Marshall,Daniel S. Marshall,L. W. Lombardo,L. W. Lombardo,Aharon Kapitulnik,Aharon Kapitulnik,P. H. Dickinson,P. H. Dickinson,Sebastian Doniach,Sebastian Doniach,J. DiCarlo,J. DiCarlo,T. Loeser,T. Loeser,C. H. Park,C. H. Park +27 more
TL;DR: In this paper, the gap size reaches a maximum of approximately 20 meV along the Cu-O bond direction, and a minimum of much smaller or vanishing magnitude 45\ifmmode^\circ\else\text degree\fi{} away.
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Key features in the measured band structure of Bi2Sr2CaCu2O8+ delta : Flat bands at EF and Fermi surface nesting.
Daniel Dessau,Z.-X. Shen,D. M. King,Daniel S. Marshall,L. W. Lombardo,P. H. Dickinson,A. G. Loeser,J. DiCarlo,C. H. Park,Aharon Kapitulnik,W. E. Spicer +10 more
TL;DR: Comparative analysis of these data with those from other cuprate superconductors suggests that features of the measured band structure may be responsible for many of the anomalous physical properties of the p-type cuprates, while the absence of these features may be related to the more ``normal'' physical Properties of the n types.
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Weak-coupling theory of high-temperature superconductivity in the antiferromagnetically correlated copper oxides
TL;DR: It is found that the effective quasiparticle interaction responsible for superconductivity possesses considerable structure in both momentum and frequency space, and that if one wishes to obtain quantitatively meaningful results it is essential to allow for that structure in solving the full integral equations that determine the superconducting transition temperature and thesuperconducting properties.