Spin excitations in the nematic phase and the metallic stripe spin-density wave phase of iron pnictides

Abstract

We present a general study of the magnetic excitations within a weak-coupling five-orbital model relevant to itinerant iron pnictides. As a function of enhanced electronic correlations, the spin excitations in the symmetry broken spin-density wave phase evolve from broad low-energy modes in the limit of weak interactions to sharply dispersing spin wave prevailing to higher energies at larger interaction strengths. We show how the resulting spin response at high energies depends qualitatively on the magnitude of the interactions. We also calculate the magnetic excitations in the nematic phase by including an orbital splitting, and find a pronounced C_2 symmetric excitation spectrum right above the transition to long-range magnetic order. Finally, we discuss the C_2 versus C_4 symmetry of the spin excitations as a function of energy for both the nematic and the spin-density wave phase.

arXiv comment10 pages, 10 figures

References in corpus (67)

• A Common Thread: the pairing interaction for the unconventional superconductors
• Resonant Inelastic X-ray Scattering Studies of Elementary Excitations
• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Theory of Electron Nematic Order in LaOFeAs
• Divergent nematic susceptibility in an iron arsenide superconductor
• Magnetism and its microscopic origin in iron-based high-temperature superconductors
• Symmetry breaking orbital anisotropy on detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
• Ising and Spin orders in Iron-based Superconductors
• Spin Waves and Magnetic Exchange Interactions in CaFe2As2
• Ferro-Orbital Order and Strong Magnetic Anisotropy in the Parent Compounds of Iron-Pnictide Superconductors
• Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
• Magnetism in Fe-based superconductors
• Uniaxial strain detwinning of CaFe2As2 and BaFe2As2: optical and transport study
• Nodal Spin Density Wave and band topology of the FeAs based materials
• Orbital-Ordering Induces Structural Phase Transition and the Resistivity Anomaly in Iron Pnictides
• Orbital Order and Spontaneous Orthorhombicity in Iron Pnictides
• Nematic spin fluid in the tetragonal phase of BaFe2As2
• Nematic spin correlations in the tetragonal state of uniaxial strained BaFe2-xNixAs2
• Orbital Ordering and Unfrustrated $(\pi ,0)$ Magnetism from Degenerate Double Exchange in the Iron Pnictides
• Magnetically-Driven Suppression of Nematic Order in an Iron-Based Superconductor
• Phase diagram and Gap anisotropy in Iron-Pnictide Superconductors
• Low energy spin waves and magnetic interactions in SrFe${}_2$As${}_2$
• Microscopic origin of magnetism and magnetic interactions in ferropnictides
• Itinerant magnetic excitations in antiferromagnetic CaFe2As2
• Magnetic degeneracy and hidden metallicity of the spin density wave state in ferropnictides
• Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
• Anisotropic itinerant magnetism and spin fluctuations in BaFe2As2: A neutron scattering study
• Consistent model of magnetism in ferropnictides
• Nature of magnetic excitations in superconducting BaFe${}_{1.9}$Ni${}_{0.1}$As${}_2$
• A magnetic origin for high temperature superconductivity in iron pnictides
• High energy spin excitations in BaFe2As2
• Sign-reversal of the in-plane resistivity anisotropy in hole-doped iron pnictides
• Sign-reversal of the in-plane resistivity anisotropy in iron pnictides
• Distinct electronic nematicities between electron and hole underdoped iron pnictides
• Theory of itinerant magnetic excitations in the SDW phase of iron-based superconductors
• Competing orders in FeAs layers
• Anisotropy of the in-plane resistivity of underdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ superconductors induced by impurity scattering in the antiferromagnetic orthorhombic phase
• Antiferromagnetic ordering in the absence of a structural distortion in Ba(Fe{1-x}Mn{x})2As2
• Anisotropic three-dimensional magnetism in CaFe2As2
• Predicted formation of superconducting platinum-hydride crystals under pressure in the presence of molecular hydrogen
• The magnetic excitation spectra in BaFe${}_2$As${}_2$: a two-particle approach within DFT+DMFT
• Itinerant Spin Excitations in SrFe2As2 Measured by Inelastic Neutron Scattering
• NMR Search for the Spin Nematic State in LaFeAsO Single Crystal
• Neutron and ARPES Constraints on the Couplings of the Multiorbital Hubbard Model for the Pnictides
• Orbital differentiation and the role of orbital ordering in the magnetic state of Fe superconductors
• Spin excitations in the excitonic spin-density-wave state of the iron pnictides
• Correlation effects in the iron pnictides
• Magnetic Excitations in the High Tc Iron Pnictides
• Spin excitation anisotropy as a probe of orbital ordering in the paramagnetic tetragonal phase of superconducting BaFe1.904Ni0.096As2
• Orbital-weight redistribution triggered by spin order in the pnictides
• Finite temperature spin-dynamics and phase transitions in spin-orbital models
• Spin and Charge Dynamics Ruled by Antiferromagnetic Order in Iron Pnictides
• Effect of disorder on the resistivity anisotropy near the electronic nematic phase transition in pure and electron-doped BaFe${}_2$As${}_2$
• Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides
• Possible realization of an antiferromagnetic Griffiths phase in Ba[Fe(1-x)Mn(x)](2)As(2)
• Enhancing magnetic stripe order in iron pnictides by RKKY exchange interactions
• Effect of doping on the magnetostructural ordered phase of iron arsenides: A comparative study of the resistivity anisotropy in the doped BaFe${}_2$As${}_2$ with doping into three different sites
• Magnetic order without tetragonal-symmetry-breaking in iron arsenides: microscopic mechanism and spin-wave spectrum
• Emergent defect states as a source of resistivity anisotropy in the nematic phase of iron pnictides
• Multiorbital Spin Susceptibility in a Magnetically Ordered State - Orbital versus Excitonic Spin Density Wave Scenario
• In-plane spin excitation anisotropy in the paramagnetic phase of NaFeAs
• Nematic orders in Iron-based superconductors
• Spin-waves in the $J_{1a}-J_{1b}-J_2$ orthorombic square-lattice Heisenberg models: Application to the iron pnictide materials
• Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(Fe${}_{0.953}$Co${}_{0.047}$)${}_2$As${}_2$: Evidence for a sharp enhancement of spin fluctuations by nematic order
• The magnetic moment enigma in Fe-based high temperature superconductors
• Spin Dynamics of a $J_1-J_2$ Antiferromagnet and its Implications for Iron Pnictides
• Spin excitations in layered antiferromagnetic metals and superconductors

Cited by in corpus (17)

• Spin fluctuations in iron pnictides and chalcogenides: From antiferromagnetism to superconductivity
• Magnetic interactions in iron superconductors: A review
• Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides
• Spin Waves in Detwinned BaFe${}_2$As${}_2$
• Singular magnetic anisotropy in the nematic phase of FeSe
• Collective magnetic excitations of $C_4$ symmetric magnetic states in iron-based superconductors
• Spin excitations in hole-overdoped iron-based superconductors
• Damped spin-wave excitations in the itinerant antiferromagnet $\gamma$-Fe${}_{0.7}$Mn${}_{0.3}$
• Doping evolution of the normal state magnetic excitations in pressurized La3Ni2O7
• Drude weight anisotropy in the doped iron pnictides: the primary role of orbital weight redistribution along the reconstructed Fermi surfaces
• Influence of orbital nematic order on spin responses in Fe-based superconductors
• Competing magnetic fluctuations and orders in a multiorbital model of doped SrCo${}_2$As${}_2$
• Multi-orbital quantum antiferromagnetism in iron pnictides --- effective spin couplings and quantum corrections to sublattice magnetization
• Spin-wave excitations in the SDW state of iron pnictides: a comparison between the roles of interaction parameters
• Spin-wave excitations in the SDW state of doped iron pnictides
• Effect of strain-induced orbital splitting on the magnetic excitations in undoped cuprates
• Magnetic excitations in the normal and nematic phases of iron pnictides