Raman scattering as a probe of charge nematic fluctuations in iron based superconductors

Abstract

We report Raman scattering measurement of charge nematic fluctuations in the tetragonal phase of BaFe${}_2$As${}_2$ and Sr(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ (x=0.04) single crystals. In both systems, the observed nematic fluctuations are found to exhibit divergent Curie-Weiss like behavior with very similar characteristic temperature scales, indicating a universal tendency towards charge nematic order in 122 iron-based superconductors.

6 pages, 3 figures, SCES2013 proceedings

References in corpus (15)

• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Theory of Electron Nematic Order in LaOFeAs
• Inelastic Light Scattering From Correlated Electrons
• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Ising and Spin orders in Iron-based Superconductors
• Nematic and meta-nematic transitions in the iron pnictides
• Formation of a Nematic Fluid at High Fields in Sr3Ru2O7
• Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2
• Hall effect and resistivity study of the magnetic transition, carrier content and Fermi liquid behavior in Ba(Fe(1-x) Cox)2As2
• Self-Consistent Vertex Correction Analysis for Iron-Based Superconductors: Mechanism of Coulomb-Interaction-Driven Orbital Fluctuations
• Unprecedented anisotropic metallic state in BaFe2As2 revealed by optical spectroscopy
• Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
• Scaling between magnetic and lattice fluctuations in iron-pnictide superconductors
• Normal state spin dynamics in the iron-pnictide superconductors BaFe2(As1-xPx)2 and Ba(Fe1-xCox)2As2 probed with NMR measurements
• Electronic Raman scattering from orbital nematic fluctuations

Cited by in corpus (6)

• Electronic nematic susceptibility of iron-based superconductors
• Emergence of Orbital Nematicity in the Tetragonal Phase of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Raman scattering study of spin-density-wave-induced anisotropic electronic properties in AFe2As2 (A=Ca,Eu)
• Dynamical susceptibility of a near-critical non-conserved order parameter and B2g Raman response in Fe-based superconductors
• Stress-induced nematicity in EuFe2As2 studied by phononic Raman spectroscopy
• Divergence of the quadrupole-strain susceptibility of YbRu${}_2$Ge${}_2$; a local moment realization of electronic nematicity