Inhomogeneous superconductivity and the “pseudogap” state of novel superconductors

@article{Kresin2006InhomogeneousSA,
  title={Inhomogeneous superconductivity and the “pseudogap” state of novel superconductors},
  author={Vladimir Z. Kresin and Yurii N. Ovchinikov and Stuart A. Wolf},
  journal={Physics Reports},
  year={2006},
  volume={431},
  pages={231-259}
}
Abstract Many novel superconducting compounds such as the high T c oxides are intrinsically inhomogeneous systems by virtue of the superconductivity being closely related to the carrier density which is in turn provided in most cases by doping. An inhomogeneous structure is thus created by the statistical nature of the distribution of dopants. At the same time doping also leads to pair-breaking and, consequently, to a local depression of T c . This is a major factor leading to inhomogeneity. As… Expand
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References

SHOWING 1-10 OF 99 REFERENCES
The crystal field in rare earth based high-temperature superconductors
Neutron spectroscopy is a powerful tool to determine unambiguously the crystal-field (CF) potential in rare-earth (R) based high-Tc superconducting materials. This technique provides detailedExpand
Importance of phase fluctuations in superconductors with small superfluid density
THE superconducting state of a metal is characterized by a complex order parameter with an amplitude and a phase. In the BCS-Eliashberg mean-field theory1, which is a very good approximation forExpand
The doping dependence of T* – what is the real high-Tc phase diagram?
Abstract Underdoped high- T c superconductors are frequently characterised by a temperature, T * , below which the normal-state pseudogap opens. Two different “phase diagrams” based on the doping ( pExpand
Diamagnetic activity above Tc as a precursor to superconductivity in La2-xSrxCuO4 thin films
Superconductors show zero resistance to electric current, and expel magnetic flux (the Meissner effect) below the transition temperature (Tc). In conventional superconductors, the ‘Cooper pairs’ ofExpand
Intrinsic Inhomogeneities in superconductors and the pseudogap phenomenon
High-${T}_{c}$ oxides are intrinsically inhomogeneous materials. The density of states is evaluated for such an inhomogeneous system, and it displays a gap structure above ${T}_{c}^{\mathrm{res}}$Expand
On the possibility of new high Tc superconductors by producing metal heterostructures as in the cuprate perovskites
Abstract Here we propose a possible way to produce superconductors with high critical temperature Tc by confinement of a Fermi liquid in a superlattice of quantum stripes (wells, wires or dots). TheExpand
Vortex-like excitations and the onset of superconducting phase fluctuation in underdoped La2-xSrxCuO4
TLDR
Evidence for vortices (or vortex-like excitations) in La2-xSrxCuO4 at temperatures significantly above the critical temperature is reported. Expand
Spectroscopic evidence for a pseudogap in the normal state of underdoped high-Tc superconductors
IT is well known that BCS mean-field theory is remarkably successful in describing conventional superconductors. A central concept of BCS theory is the energy gap in the electronic excitationExpand
New Magnetic Superconductors: A Toy Box for Solid‐State Physicists
Over the past decade, discussion of the interaction between superconductivity and magnetism has been overshadowed by the omnipresence of the oxide‐based, high‐temperature superconductors. ButExpand
Impurity-induced states in conventional and unconventional superconductors
We review recent developments in our understanding of how impurities influence the electronic states in the bulk of superconductors. Our focus is on the quasi-localized states in the vicinity ofExpand
...
1
2
3
4
5
...