Nematic correlation length in iron-based superconductors probed by inelastic x-ray scattering

Abstract

Nematicity is ubiquitous in electronic phases of high-$T_c$ superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to extract the temperature-dependent nematic correlation length $\xi$ from the anomalous softening of acoustic phonon modes in FeSe, underdoped Ba(Fe${}_{0.97}$Co${}_{0.03}$)${}_2$As${}_2$ and optimally doped Ba(Fe${}_{0.94}$Co${}_{0.06}$)${}_2$As${}_2$. In all cases, we find that $\xi$ is well described by a power law $(T-T_0{)}^{-1/2}$ extending over a wide temperature range. We attributed this mean-field behavior and the extended fluctuation regime to a sizable nemato-elastic coupling, which may be detrimental to superconductivity.

References in corpus (37)

• The Puzzle of High Temperature Superconductivity in Layered Iron Pnictides and Chalcogenides
• High-temperature superconductivity in iron-based materials
• Nematic order in iron superconductors - who is in the driver's seat?
• Nematic Fermi Fluids in Condensed Matter Physics
• Theory of Electron Nematic Order in LaOFeAs
• Is LaO${}_{1-x}$F${}_x$FeAs an electron-phonon superconductor ?
• The Structural Phase Transition in FeSe (Fe1+dSe)
• Ising and Spin orders in Iron-based Superconductors
• Anomalous suppression of the orthorhombic distortion in superconducting Ba[Fe(1-x)Cox]2As2
• Orbital-driven nematicity in FeSe
• Emergence of the nematic electronic state in FeSe
• Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
• Effects of nematic fluctuations on the elastic properties of iron arsenide superconductors
• A review of Fe-chalcogenide superconductors: the simplest Fe-based superconductor
• Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
• Electron-Hole Symmetry and Magnetic Coupling in Antiferromagnetic LaOFeAs
• Origin of the tetragonal-to-orthorhombic (nematic) phase transition in FeSe: a combined thermodynamic and NMR study
• Magnetic ground state of FeSe
• Structural quantum criticality and superconductivity in iron-based superconductor Ba(Fe1-xCox)2As2
• Observation of incipient charge nematicity in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Nematic susceptibility of hole- and electron-doped BaFe2As2 iron-based superconductors from shear modulus measurements
• Orbital-dependent Fermi Surface shrinking as a fingerprint of nematicity in FeSe
• Electronic nematic susceptibility of iron-based superconductors
• Suppression of electronic correlations by chemical pressure from FeSe to FeS
• Anisotropic spin fluctuations in detwinned FeSe
• Critical Quadrupole Fluctuations and Collective Modes in Iron Pnictide Superconductors
• Lattice effects on nematic quantum criticality in metals
• Elastic coupling and spin-driven nematicity in iron-based superconductors
• Phonon softening near structural transition in BaFe2As2 observed by inelastic x-ray scattering
• Pairing instability near a lattice-influenced nematic quantum critical point
• Resistivity near a nematic quantum critical point: Impact of acoustic phonons
• Distinct pressure evolution of coupled nematic and magnetic order in FeSe
• Close correlation between magnetic properties and the soft phonon mode of the structural transition in BaFe${}_2$As${}_2$ and SrFe${}_2$As${}_2$
• Effect of magnetism on lattice dynamics in SrFe${}_2$As${}_2$ as seen via high resolution inelastic x-ray scattering
• Soft phonons reveal the nematic correlation length in Ba(Fe${}_{0.94}$Co${}_{0.06}$)${}_2$As${}_2$
• Introduction to High-Resolution Inelastic X-Ray Scattering
• Local nematic susceptibility in stressed BaFe${}_2$As${}_2$ from NMR electric field gradient measurements

Cited by in corpus (12)

• An Electronic Nematic Liquid in BaNi${}_2$As${}_2$
• Field-tuned ferroquadrupolar quantum phase transition in the insulator TmVO${}_4$
• Phonon softening and slowing down of charge-density-wave fluctuations in BaNi${}_2$As${}_2$
• Short-range nematic fluctuations in Sr1-xNaxFe2As2 superconductors
• Quadrupolar charge dynamics in the nonmagnetic FeSe${}_{1-x}$S${}_x$ superconductors
• Soft elastic constants from phonon spectroscopy in hole-doped Ba${}_{1-x}$(K,Na)${}_x$Fe${}_2$As${}_2$ and Sr${}_{1-x}Na$_x$Fe$_2$As$_2$
• Defect-induced electronic smectic state at the surface of nematic materials
• Strong electron-phonon coupling in Ba${}_{1-x}$Sr${}_x$Ni${}_2$As${}_2$
• Coherence Length of Electronic Nematicity in Iron-Based Superconductors
• Microscopic origin of the nemato-elastic coupling and dynamics of hybridized collective nematic-phonon excitations
• Acoustic lattice instabilities at the magneto-structural transition in Fe${}_{1.057(7)}$Te
• Edwards-Anderson parameter and local Ising-nematicity in FeSe revealed via NMR spectral broadening