Paramagnon dispersion and damping in doped NaCaCuOCl
arXiv:2303.04139 · doi:10.1103/PhysRevB.108.024506
Abstract
Using Resonant Inelastic X-ray Scattering, we measure the paramagnon dispersion and damping of undoped, antiferromagnetic CaCuOCl as well as doped, superconducting NaCaCuOCl. Our estimation of the spin-exchange parameter and width of the paramagnon peak at the zone boundary confirms that no simple relation can be drawn between these parameters and the critical temperature . Consistently with other cuprate compounds, we show that upon doping there is a slight softening at , but not at the zone boundary . In combination with these measurements we perform calculations of the dynamical spin structure factor of the one-band Hubbard model using cluster dynamical mean-field theory. The calculations are in excellent agreement with the experiment in the undoped case, both in terms of energy position and width. While the increase in width is also captured upon doping, the dynamical spin structure factor shows a sizable softening at , which provides insightful information on the length-scale of the spin fluctuations in doped cuprates.
arXiv comment11 pages, 5 figures, 2 tables, small corrections in references. Accepted for publication in Physical Review B (American Physical Society)
References in corpus (51)
- Maximally-localized generalized Wannier functions for composite energy bands
- Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
- Angle-resolved photoemission spectroscopy of the cuprate superconductors
- Maximally-localized Wannier functions for entangled energy bands
- Quantum Cluster Theories
- Frequency-dependent local interactions and low-energy effective models from electronic structure calculations
- Ab initio calculations of quasiparticle band structure in correlated systems: LDA++ approach
- Continuous Time Quantum Monte Carlo method for fermions
- Cellular Dynamical Mean Field Approach to Strongly Correlated Systems
- Spin waves and electronic interactions in La2CuO4
- Intense paramagnon excitations in a large family of high-temperature superconductors
- Antiferromagnetism and d-wave superconductivity in cuprates: a uster DMFT study
- Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal
- Pseudogap induced by short-range spin correlations in a doped Mott insulator
- Dynamical Breakup of the Fermi Surface in a doped Mott Insulator
- Anomalous High-Energy Spin Excitations in La2CuO4
- Energy and symmetry of excitations in undoped layered cuprates measured by Cu resonant inelastic x-ray scattering
- Persistent spin excitations in doped antiferromagnets revealed by resonant inelastic light scattering
- Pseudogap and antiferromagnetic correlations in the Hubbard model
- Spin excitations in a single LaCuO layer
- Influence of apical oxygen on the extent of in-plane exchange interaction in cuprate superconductors
- High-Tc Superconductivity and Antiferromagnetism in Multilayered Copper Oxides - A New Paradigm of Superconducting Mechanism -
- Anomalous high energy dispersion in photoemission spectra from insulating cuprates
- Measurement of magnetic excitations in the two-dimensional antiferromagnetic Sr2CuO2Cl2 insulator using resonant x-ray scattering:Evidence for extended interactions
- Updated Core Libraries of the ALPS Project
- High energy kink in the single particle spectra of the two-dimensional Hubbard model
- Implementation of the Maximum Entropy Method for Analytic Continuation
- Ab initio effective Hamiltonians for cuprate superconductors
- High-energy magnetic excitations in BiSrCaCuO: Towards a unified description of the electronic and magnetic degrees of freedom in the cuprates
- Mott physics and spin fluctuations: a functional viewpoint
- On the Electron Pairing Mechanism of Copper-Oxide High Temperature Superconductivity
- String excitations of a hole in a quantum antiferromagnet and photoelectron spectrospopy
- Insights into the High Temperature Superconducting Cuprates from Resonant Inelastic X-ray Scattering
- Experimental Determination of Momentum-Resolved Electron-Phonon Coupling
- Dispersion, damping, and intensity of spin excitations in the single-layer (Bi,Pb)(Sr,La)CuO cuprate superconductor family
- Low energy theory of the t-t'-t''-U Hubbard Model at half-filling: interaction strengths in cuprate superconductors and an effective spin-only description of La_2CuO_4
- Strain-Engineering Mott-Insulating LaCuO
- Unified quantitative model for magnetic and electronic spectra of the undoped cuprates
- Polarization resolved Cu -edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBaCuO
- Paramagnons and high-temperature superconductivity in mercury-based cuprates
- Origin of Strong Dispersion in Hubbard Insulators
- Doping dependence of the magnetic excitations in LaSrCuO
- Itinerant effects and enhanced magnetic interactions in Bi-based multilayer cuprates
- RIXS studies of magnons and bimagnons in the lightly doped cuprate La2-xSrxCuO4
- low-energy effective Hamiltonians for high-temperature superconducting cuprates BiSrCuO, BiSrCaCuO, HgBaCuO and CaCuO
- Multiple-magnon excitations shape the spin spectrum of cuprate parent compounds
- On the extraction of paramagnon excitations from resonant inelastic X-ray scattering experiments
- Quantum spin fluctuations and evolution of electronic structure in cuprates
- Magnetic Phase Diagram of the Hole-doped CaNaCuOCl Cuprate Superconductor
- Hybridization expansion Monte Carlo simulation of multi-orbital quantum impurity problems: matrix product formalism and improved Monte Carlo sampling
- Resonant inelastic X-ray scattering study of spin-wave excitations in the cuprate parent compound CaCuOCl