The spin excitation spectrum in striped bilayer compounds

Abstract

The spin dynamics of bilayer cuprate compounds are studied in a basic model. The magnetic spectral properties are calculated in linear spin-wave theory for several stripe configurations which differ by the relative location of the stripes in the layers. We focus on the bilayer splitting of the magnon bands near the incommensurate low energy peaks as well as near the $\pi$ resonance, distinguishing between the odd and even channel. We find that a x-shaped dispersion near the $\pi$ resonance is generic for stripes. By comparison of our results to neutron scattering data for $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$ we conclude that the stripe model is consistent with characteristic features of bilayer high-$T_c$ compounds.

arXiv comment10 pages, 9 figures

References in corpus (12)

• 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
• The Spin Excitation Spectrum in Superconducting $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6.85}$
• Incommensurate Magnetic Fluctuations in YBa2Cu3O6.6
• One-dimensional nature of the magnetic fluctuations in YBa${}_2$Cu${}_3$O${}_{6.6}$
• Magnetic Resonant Mode in the Single-Layer High Temperature Superconductor Tl${}_2$Ba${}_2$Cu${}_{6+\delta }$
• Dynamic Stripes and Resonance in the Superconducting and Normal Phases of YBa2Cu3O6.5 Ortho-II Superconductor
• High energy spin excitations in YBa_2 Cu_3 O_{6.5}
• Spin dynamics of stripes
• Unified Description of the Resonance Peak and Incommensuration in High-$T_c$ Superconductors
• Two resonant magnetic modes in an overdoped high-${\mathbf{T}}_{\mathbf{c}}$ superconductor
• Neutron scattering search for static magnetism in oxygen ordered YBa2Cu3O6.5

Cited by in corpus (8)

• From incommensurate to dispersive spin-fluctuations: The high-energy inelastic spectrum in superconducting YBa2Cu3O6.5
• Resonant magnetic excitations at high energy in superconducting $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6.85}$
• Doping Dependence of Bilayer Resonant Spin Excitations in $(\mathbf{Y},\mathbf{Ca})\mathbf{B}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6+\mathbf{x}}$
• Spin dynamics near the critical doping in weakly-superconducting underdoped YBa2Cu3O6.35 (Tc=18K)
• Relation between the one-particle spectral function and dynamic spin susceptibility in superconducting Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8-\delta }$
• Magnetic fluctuations in n-type high-$T_c$ superconductors reveal breakdown of fermiology
• Spin susceptibility in bilayered cuprates: resonant magnetic excitations
• Superconducting pairing and the pseudogap in nematic striped La2-xSrxCuO4