Raman scattering in iron-based superconductors

Abstract

Iron-based superconducting layered compounds have the second highest transition temperature after cuprate superconductors. Their discovery is a milestone in the history of high-temperature superconductivity and will have profound implications for high-temperature superconducting mechanism as well as industrial applications. Raman scattering has been extensively applied to correlated electron systems including the new superconductors due to its unique ability to probe multiple primary excitations and their coupling. In this review, we will give a brief summary of the existing Raman experiments in the iron-based materials and their implication for pairing mechanism in particular. And we will also address some open issues from the experiments.

14 pages, 12 figures, invited review article

References in corpus (32)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Superconductivity in Iron Compounds
• The superconductivity at 18 K in LiFeAs system
• Inelastic Light Scattering From Correlated Electrons
• Is LaO${}_{1-x}$F${}_x$FeAs an electron-phonon superconductor ?
• A Novel Large Moment Antiferromagnetic Order in K0.8Fe1.6Se2 Superconductor
• Transition of stoichiometricSr2VO3FeAs to a superconducting state at 37.2 K
• A Large Iron Isotope Effect in SmFeAsO1-xFx and Ba1-xKxFe2As2
• Coexistence of incommensurate magnetism and superconductivity in Fe_{1+y}Se_xTe_{1-x}
• Inverse Iron Isotope Effect on the transition temperature of the (Ba,K)Fe2As2 superconductor
• Band and momentum dependent electron dynamics in superconducting $\mathrm{Ba}(\mathrm{F}{\mathrm{e}}_{1-\mathrm{x}}\mathrm{C}{\mathrm{o}}_{\mathrm{x}}{)}_2\mathrm{A}{\mathrm{s}}_2$ as seen via electronic Raman scattering
• Raman scattering study of (K${}_x$Sr${}_{1-x}$)Fe${}_2$As${}_2$ ($x$ = 0.0, 0.4)
• Doping dependence of the lattice dynamics in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ studied by Raman spectroscopy
• Phonon anomalies in pure and underdoped R{1-x}K{x}Fe{2}As{2} (R = Ba, Sr) investigated by Raman light scattering
• Lattice and electronic anomalies of CaFe_2As_2 studied by Raman spectroscopy
• Interstitial iron tuning of the spin fluctuations in Fe1+xTe
• Phonon, Two-Magnon and Electronic Raman Scattering of Fe1+yTe1-xSex
• Raman scattering study of Spin-Density-Wave order and electron-phonon coupling in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Anomalous optical phonons in FeTe pnictides: spin state, magnetic order, and lattice anharmonicity
• Vacancy ordering and phonon spectrum in the Fe superconductor K${}_{0.8}$Fe${}_{1.6}$Se${}_2$
• Impact of the Spin Density Wave Order on the Superconducting Gap of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Anomalous dependence of the c-axis polarized Fe B${}_{1g}$ phonon mode with Fe and Se concentrations in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Symmetry dependence of phonon lineshapes in superconductors with anisotropic gaps
• Two-magnon Raman scattering in A${}_{0.8}$Fe${}_{1.6}$Se${}_2$ systems: competition between superconductivity and antiferromagnetic order
• Raman spectra in iron-based quaternary CeO${}_{1-x}$F${}_x$FeAs and LaO${}_{1-x}$F${}_x$FeAs
• Temperature dependence and resonance effects in Raman scattering of phonons in NdFeAsO${}_x$F${}_{1-x}$ single crystals
• Self-energy effects and electron-phonon coupling in Fe-As superconductors
• Raman Scattering Study of the Lattice Dynamics of Superconducting LiFeAs
• Effect of iron content and potassium substitution in A${}_{0.8}$Fe${}_{1.6}$Se${}_2$ (A = K, Rb, Tl) superconductors: a Raman-scattering investigation
• Raman scattering study of electron-doped Pr${}_x$Ca${}_{1-x}$Fe${}_2$As${}_2$ superconductors
• Anharmonic softening of Raman active phonons in Iron-Pnictides; estimating the Fe isotope effect due to anharmonic expansion
• Magnetic and Electronic Raman Scattering at the Nodal Spin-Density-Wave Transition in BaFe2As2

Cited by in corpus (4)

• RPA Analysis of a Two-orbital Model for the BiS2-based Superconductors
• Electron-phonon coupling in cuprate and iron-based superconductors revealed by Raman scattering
• Structural investigations in BaFe2-xRuxAs2 as a function of Ru and temperature
• Coupling of the A_{1g} As-phonon to magnetism in iron pnictides