Theory and computer simulation of diffuse scattering from lattice-gas models: Structure-factor calculations for the high-temperature superconductor YBa2Cu3O6+x
T. Fiig, N. H. Andersen, J. Berlin, P. A. Lindgård
DOI 10.1103/PhysRevB.51.12246 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
For one-dimensional ordered structures the relation between the structure factor S(q) and the cluster-size distribution scrD(n) is discussed. For a number of one-dimensional models the problem of excluded volume related to densely packed order structures is treated exactly and the corresponding line shapes are found. The possibilities for having line shapes of Lorentzian, Lorentzian-square, and multipeaked form for the diffuse scattering are discussed. We also discuss the possible decomposition of S(q) into contributions from domains of differently ordered structures. The oxygen order in YBa2Cu3O6+x has been investigated by Monte Carlo simulation using the two-dimensional anisotropic next-nearest-neighbor lattice-gas model (the ASYNNNI model). The calculation of the structure factor in two spatial dimensions has been implemented on a massively parallel computer. Our numerical results for the line shapes of the profile of the structure factor at the (1/2,0,0) superstructure reflection are compared with those obtained from analytical calculations of our one-dimensional model systems, the two-dimensional Ising model, as well as with recent neutron and synchrotron x-ray-diffraction measurements.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Disorder effects in a model of competing superconducting and charge density wave orders in YBa2Cu3O6+x
similarity 0.97Dror Orgad
Source status unknown — claims are unverified
Redistribution of phase fluctuations in a periodically driven cuprate superconductor
similarity 0.97R. Höppner et al.
Source status unknown — claims are unverified
Interplay of electron-phonon interaction and electron correlation in high-temperature superconductivity
similarity 0.97Sumio Ishihara & Naoto Nagaosa
Source status unknown — claims are unverified
Application of the scattering-rate sum rule to the interplane optical conductivity of high-temperature superconductors: Pseudogap and bilayer effects
similarity 0.96N. Shah & A. J. Millis
Source status unknown — claims are unverified
Phonon attenuation and quasiparticle–phonon energy transfer in d-wave superconductors
similarity 0.96M. F. Smith & M. B. Walker
Source status unknown — claims are unverified
Superconductivity in a strongly correlated anisotropic three-dimensional system
similarity 0.96A. N. Das et al.
Source status unknown — claims are unverified