Magnetic vortices instead of stripes: another interpretation of magnetic neutron scattering in lanthanum cuprates

Abstract

It is proposed, that a two-dimensional magnetic superstructure closely related to the one mentioned recently by Christensen et al. [cond-mat/0608204] constitutes a viable interpretation of the four-fold splitting of the magnetic (π, π) peak in lanthanum cuprates. (This splitting is usually interpreted as the evidence for stripes.) The superstructure in question has the topology of the square crystal of magnetic vortices with approximate periodicity (4a x 4a). This vortex crystal exhibits no magnetic antiphase lines. It is shown that such a superstructure is magnetically stable in the approximation of staggered spin polarizations, and that it should be accompanied by charge modulation characterized by charge peaks at the positions observed experimentally.

4 pages, 2 figures, final version

References in corpus (3)

• A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
• Distinguishing Patterns of Charge Order: Stripes or Checkerboards
• Interpretation of low-temperature nuclear quadrupole resonance spectra in La(1.875)Ba(0.125)CuO(4) in terms of two-dimensional spin superstructure

Cited by in corpus (13)

• Neutron scattering study of the magnetic phase diagram of underdoped YBa(2)Cu(3)O(6+x)
• Phase separation in the vicinity of "quantum critical" doping concentration: implications for high temperature superconductors
• Single domain stripe order in a high-temperature superconductor
• Comment on "Broken translational and rotational symmetry via charge stripe order in underdoped YBa2Cu3O6+y"
• Spin canting as a result of the competition between stripes and spirals in cuprates
• Competition of spatially inhomogeneous states in antiferromagnetic Hubbard model
• Dynamical spin susceptibility of spin-valley half-metal
• A remark on the notion of independence of quantum integrals of motion in the thermodynamic limit
• Pseudogap and Fermi surface in the presence of spin-vortex checkerboard for 1/8-doped lanthanum cuprates
• Spin excitation spectrum of high-temperature cuprate superconductors from finite cluster simulations
• Superconductivity model for a spin-vortex checkerboard
• A negative-U interpretation of the femto-second laser pulse induced crystallographic expansion of a cuprate HTSC material reported recently by Gedik et al
• Optically-induced Umklapp shift currents in striped cuprates