Theory of the resonant neutron scattering of high-Tc superconductors.

  title={Theory of the resonant neutron scattering of high-Tc superconductors.},
  author={Demler and Zhang},
  journal={Physical review letters},
  volume={75 22},
  • Demler, Zhang
  • Published 15 February 1995
  • Physics
  • Physical review letters
Recent polarized neutron scattering experiments on $YBa_2 Cu_3 O_7$ have revealed a sharp spectral peak at the $(\pi,\pi)$ in reciprocal lattice centered around the energy transfer of $41\ meV$. We offer a theoretical explanation of this remarkable experiment in terms of a new collective mode in the particle particle channel of the Hubbard model. This collective mode yields valuable information about the symmetry of the superconducting gap. 

Figures from this paper

Theory for Inelastic Neutron Scattering in HIGH-Tc Superconductors:
Assuming the exchange of antiferromagnetic spin fluctuations as the Cooper pairing mechanism we calculate the doping dependence of the resonance peak seen in inelastic neutron scattering and the
From Magnons to the Resonance Peak: Spin Dynamics in High-T_C Superconducting Cuprates by Inelastic Neutron Scattering
The spin dynamics of high temperature superconductors measured by inelastic neutron scattering is reviewed. The spin susceptibility evolves a lot with increasing doping from the undoped insulating
The magnetic resonance in high-temperature superconductors: evidence for an extended s-wave pairing symmetry
We have identified several important features in the neutron scattering data of cuprates that are difficult to explain in terms of d-wave and isotropic s-wave order parameters. Alternatively, we show
Neutron Scattering and the Magnetic Response of Superconductors and Related Compounds
This review is intended to provide an introduction to the study of superconductors by magnetic neutron scattering. This experimental technique has been particularly important in the study of
Recent progress on neutron studies of YBa2Cu3O6+x
A review is given of recent developments in inelastic neutron scattering experiments on the high temperature superconductor YBa_2Cu_3O_7 and its antiferromagnetic precursor YBa_2Cu_3O6.2. These
The effect of collective spin-1 excitations on electronic spectra in high- Tc superconductors
We review recent experimental and theoretical results on the interaction between single-particle excitations and collective spin excitations in the superconducting state of high-Tc cuprates. We
Normal-state spin dynamics and temperature-dependent spin-resonance energy in optimally doped BaFe 1.85 Co 0.15 As 2
A neutron scattering study reveals that the magnetic fluctuations in an iron arsenide superconductor behave according to the conventional theories of metals, unlike the cuprate superconductors.