Mechanism of High-Tc Superconductivity Based Mainly on Tunneling Measurements in Cuprates

Abstract

The main purpose of this brief review is to present a sketch of the mechanism of high-Tc superconductivity based mainly on tunneling measurements in cuprates. In the review, we shall mostly discuss tunneling spectroscopy in Bi2212. Analysis of the data shows that the Cooper pairs in cuprates are topological excitations (e.g. quasi-one dimensional bisolitons, discrete breathers etc.), and the phase coherence among the Cooper pairs appears due to spin fluctuations.

arXiv comment27 pages (including 19 figures)

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Cited by in corpus (13)

• Doping dependent optical properties of Bi2Sr2CaCu2O8+d
• Resistivity study of the pseudogap phase for (Hg,Re) - 1223 superconductors
• Phase Separation and the Phase Diagram in Cuprates Superconductors
• Nernst effect and Critical Field in Cuprate Superconductors
• On the applicability of the layered sine-Gordon model for Josephson-coupled high-T_c layered superconductors
• Pseudogap Behavior Revealed in Interlayer Tunneling in Overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Electronic Phase Separation Transition as the Origin of the Superconductivity and the Pseudogap Phase of Cuprates
• Origin of dips in tunneling dI/dV characteristics of cuprates
• Theory of subgap interchain tunneling in quasi one-dimensional conductors
• Doping-induced evolution of the intrinsic hump and dip energies dependent on the sample fabrication conditions in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Comment on Evolution of the electronic excitation spectrum with strongly diminishing hole density in superconducting Bi-2212 (J. W. Alldredge et al., Nature Phys. 4, 319 (2008))
• A possible scenario for the mechanism of high-Tc superconductivity based on experimental data
• Comment on Visualization of the interplay between high-temperature superconductivity, the pseudogap and impurity resonances