Superconductivity-Induced Anomalies in the Spin Excitation Spectra of Underdoped YBa_2 Cu_3 O_{6+x}

Abstract

Polarized and unpolarized neutron scattering has been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa_2 Cu_3 O_{6.5} (T_c = 52K) and YBa_2 Cu_3 O_{6.7} (T_c = 67K). Pronounced enhancements of the spectral weight centered around 25 meV and 33 meV, respectively, are observed below T_c in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa_2 Cu_3 O_7.

arXiv commentLaTex, 4 pages, 4 ps figures. to appear in Phys. Rev. Lett

References in corpus (3)

• Theory of the Resonant Neutron Scattering of High $T_c$ Superconductors
• High-Frequency Spin Waves in YBa2Cu3O6.15
• Neutron scattering and superconducting order parameter in YBa2Cu3O7

Cited by in corpus (99)

• The pseudogap in high-temperature superconductors: an experimental survey
• Quantum Orders and Symmetric Spin Liquids
• Neutron Scattering from Magnetic Excitations in Bi_2 Sr_2 Ca_2 O_8+delta
• A Survey of the Van Hove Scenario for High-T_c Superconductivity With Special Emphasis on Pseudogaps and Striped Phases
• The effect of collective spin-1 excitations on electronic spectra in high-Tc superconductors
• Evolution of the resonance and incommensurate spin fluctuations in superconducting YBa${}_2$Cu${}_3$O${}_{6+x}$
• The Magnetic Excitation Spectrum and Thermodynamics of High-$T_c$ Superconductors
• Superconducting Vortex with Antiferromagnetic Core
• Evidence for an energy scale for quasiparticle dispersion in Bi_2Sr_2CaCu_2O_8
• The Spin Excitation Spectrum in Superconducting $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6.85}$
• Neutron Scattering Study of Spin Density Wave Order in the Superconducting State of Excess-Oxygen-Doped La2CuO4+y
• Incommensurate Magnetic Fluctuations in YBa2Cu3O6.6
• Coupling strength of charge carriers to spin fluctuations in high-temperature superconductors
• Spin Susceptibility in Underdoped $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6+\mathbf{x}}$
• The connection between superconducting phase correlations and spin excitations in YBa${}_2$Cu${}_3$O${}_{6.6}$: A magnetic field study
• Spin correlations in the algebraic spin liquid - implications for high Tc superconductors
• Plaquette Boson-Fermion Model of Cuprates
• Slave Boson Approach to The Neutron Scattering in YBCO Superconductors
• Correlation of Tunneling Spectra in Bi2Sr2CaCu2O(8+delta) with the Resonance Spin Excitation
• Theory of spin excitations in undoped and underdoped cuprates
• Competing orders in a magnetic field: spin and charge order in the cuprate superconductors
• Universal Dispersive Excitations in the High-Temperature Superconductors
• Quantum impurity dynamics in two-dimensional antiferromagnets and superconductors
• The resonance peak in cuprate superconductors
• Hidden magnetic excitation in the pseudogap phase of a model cuprate superconductor
• Effect of the magnetic resonance on the electronic spectra of high Tc superconductors
• High energy spin excitations in YBa_2 Cu_3 O_{6.5}
• Renormalized mean-field theory of the neutron scattering in cuprate superconductors
• Pseudogaps in Underdoped Cuprates
• Magnetic excitations and their anisotropy in YBCO: slave-boson mean-field analysis of bilayer t-J model
• Bond operator theory of doped antiferromagnets: from Mott insulators with bond-centered charge order, to superconductors with nodal fermions
• Unusual Relationship between Magnetism and Superconductivity in FeTe${}_{0.5}$Se${}_{0.5}$
• Effect of Nonmagnetic Impurities on the Magnetic Resonance Peak in YBa2Cu3O7
• Dispersion, damping, and intensity of spin excitations in the single-layer (Bi,Pb)${}_2$(Sr,La)${}_2$CuO${}_{6+\delta }$ cuprate superconductor family
• Spin dynamics of stripes
• An SO(5) model of p-wave superconductivity and ferromagnetism
• Linear dependence of peak width in $χ(\bq, ω)$ vs T_c for YBCO superconductors
• Pi excitation of the t-J model
• Disappearance of static magnetic order and evolution of spin fluctuations in Fe${}_{1+\delta }$Se${}_x$Te${}_{1-x}$
• Theory of Spin Fluctuation-Induced Superconductivity Based on a d-p Model. II. -Superconducting State-
• Anisotropic superconductivity in the two-dimensional electron-phonon system
• The toy model for the high-Tc superconductivity
• Collective Modes in High-Temperature Superconductors
• Finite-Size Studies on the SO(5) Symmetry of the Hubbard Model
• Neutron scattering search for static magnetism in oxygen ordered YBa2Cu3O6.5
• Neel order, quantum spin liquids and quantum criticality in two dimensions
• Charge stripes and spin correlations in copper-oxide superconductors
• On Measuring Condensate Fraction in Superconductors
• Resonance peak in underdoped cuprates
• Quantum phase transitions of correlated electrons in two dimensions
• Shifting of the magnetic resonance peak to lower energy in the superconducting state of underdoped YBa_2Cu_3O_{6.8}
• Fourier-Transformed Local Density of States and Tunneling into a $D$-Wave Superconductor with Bosonic Modes
• Strong-coupling analysis of scanning tunneling spectra in Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$
• Influence of higher d-wave gap harmonics on the dynamical magnetic susceptibility of high-temperature superconductors
• d_{x^2-y^2}-Wave Pairing Fluctuations and Pseudo Spin Gap in Two-Dimensional Electron Systems
• Through a Lattice Darkly -- Shedding Light on Electron-Phonon Coupling in the High T${}_c$ Cuprates
• Neutron Scattering and the B_{1g} Phonon in the Cuprates
• Pairing and Phase Coherence in High Temperature Superconductors
• Doping induced metal-insulator transition in two-dimensional Hubbard, $t-U$, and extended Hubbard, $t-U-W$, models
• Impurity effects on the spin excitation spectra in a d-wave superconductor
• From Ising resonant fluctuations to static uniaxial order in antiferromagnetic and weakly superconducting CeCo(In${}_{1-x}$Hg${}_x$)${}_5$ ($x$=0.01)
• Detailed Structure of the Magnetic Excitation Spectra of YBa2Cu3Oy and Its Implication on the Physical Characteristics of the Electron System
• Quantum phase transitions in antiferromagnets and superfluids
• Search for the πResonance in Two Particle Tunneling Experiments of YBCO Superconductors
• Spin-roton excitations in the cuprate superconductors
• Dynamical spin susceptibility and the resonance peak in the pseudogap region of the underdoped cuprate superconductors
• Stripes, pseudogaps, and SO(6) in the cuprate superconductors
• The electronic specific heat in the pairing pseudogap regime
• A critical examination of the spin dynamics in high-$T_C$ cuprates
• c-Axis Phase Coherence and Spin Fluctuations in Cuprates
• Quasi-One-Dimensional Topological-Excitation Liquid in Bi2212 from Tunneling Spectroscopy
• Diagonalization in Reduced Hilbert Spaces using a Systematically Improved Basis: Application to Spin Dynamics in Lightly Doped Ladders
• Neutron Scattering Studies of the Magnetic Fluctuations in YBa_2Cu_3O_{7-δ}
• Doping Dependence of the Magnetic Resonance Peak in YBa_2 Cu_3 O_{6+x}
• Temperature dependence of the EPR linewidth of Yb3+ - ions in Y0.99Yb0.01Ba2Cu3OX compounds: Evidence for an anomaly near TC
• Collective Excitations in High-Temperature Superconductors
• Spin susceptibility and the pi-excitation in underdoped cuprates
• Electron-phonon pairing mechanism: cuprates with high value of the critical temperature
• A model for the neutron resonance in HgBa${}_2$CuO${}_{4+\delta }$
• Single-Particle Pseudogap in Two-Dimensional Electron Systems
• Particle-hole symmetry breaking in the pseudogap state of Pb0.55Bi1.5Sr1.6La0.4CuO6+d: A quantum-chemical perspective
• Crossover from Fermi Arc to Full Fermi Surface
• Superatom Representation of High-TC Superconductivity Revisited
• Pseudogap and incommensurate magnetic fluctuations in YBa_2Cu_3O_{6. 6}
• Phenomenological theory of spin excitations in La- and Y-based cuprates
• Coupled electronic and magnetic excitations in the cuprates and their role in the superconducting transition
• Thermal Hall Effect and Neutral Spinons in a Doped Mott Insulator
• Theory of Electron Differentiation, Flat Dispersion and Pseudogap Phenomena
• Terahertz Hall Measurements On Optimally Doped Single Crystal Bi-2212
• The origin of hour-glass magnetic dispersion in underdoped cuprate superconductors
• Convergence of energy-dependent incommensurate antiferromagnetic neutron scattering peaks to commensurate resonance in underdoped bilayer cuprates
• Néel transition, spin fluctuations, and pseudogap in underdoped cuprates by a Lorentz invariant four-fermion model in 2+1 dimensions
• Projected SO(5) Hamiltonian for Cuprates and Its Applications
• The SO(5) theory of high T_c superconductivity
• Doping dependance of the spin resonance peak in bilayer high-$T_c$ superconductors
• Magnetic Properties of YBa_2Cu_3O_{7-δ} in a self-consistent approach: Comparison with Quantum-Monte-Carlo Simulations and Experiments
• Commensurate and Incommensurate Spin Fluctuations in YBa_2Cu_3O_{6+y}
• Superconductivity and spin triplet collective mode in the t-J model close to antiferromagnetic instability
• Quantitative Determination of a Microscopic Mechanism of High Tc Superconductivity