An ARPES view on the high-Tc problem: phonons vs spin-fluctuations

Abstract

We review the search for a mediator of high-Tc superconductivity focusing on ARPES experiment. In case of HTSC cuprates, we summarize and discuss a consistent view of electronic interactions that provides natural explanation of both the origin of the pseudogap state and the mechanism for high temperature superconductivity. Within this scenario, the spin-fluctuations play a decisive role in formation of the fermionic excitation spectrum in the normal state and are sufficient to explain the high transition temperatures to the superconducting state while the pseudogap phenomenon is a consequence of a Peierls-type intrinsic instability of electronic system to formation of an incommensurate density wave. On the other hand, a similar analysis being applied to the iron pnictides reveals especially strong electron-phonon coupling that suggests important role of phonons for high-Tc superconductivity in pnictides.

A summary of the ARPES part of the Research Unit FOR538, http://for538.wmi.badw.de

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Cited by in corpus (19)

• A Common Thread: the pairing interaction for the unconventional superconductors
• Iron based superconductors: magnetism, superconductivity and electronic structure
• Charge-density-wave order with momentum $(2Q,0)$ and $(0,2Q)$ within the spin-fermion model: continuous and discrete symmetry breaking, preemptive composite order, and relation to pseudogap in hole-doped cuprates
• Bosons in high temperature superconductors: an experimental survey
• Collapse of superconductivity in cuprates via ultrafast quenching of phase coherence
• Kinetic-energy driven superconductivity in cuprate superconductors
• ARPES experiment in fermiology of quasi-2D metals (Review Article)
• On the theory of superconductivity in the extended Hubbard model: Spin-fluctuation pairing
• Electronic structure of cuprate superconductors in a full charge-spin recombination scheme
• Electronic band structure of optimal superconductors: from cuprates to ferropnictides and back again
• Optical and dc conductivities of cuprates: Spin-fluctuation scattering in the t-J model
• Quantitative comparison of single- and two-particle properties in the cuprates
• Autocorrelation of quasiparticle spectral intensities and its connection with quasiparticle scattering interference in cuprate superconductors
• Dynamical spin response in cuprate superconductors from low-energy to high-energy
• Low-temperature T${}^2$ resistivity in the underdoped pseudogap phase versus T-linear resistivity in the overdoped strange-metal phase of cuprate superconductors
• Why there is a difference between optimal doping for maximal Tc and critical doping for highest ρ_s in cuprate superconductors?
• Renormalization of electrons in bilayer cuprate superconductors
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