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Journal of Superconductivity

, Volume 10, Issue 4, pp 343–347 | Cite as

Spatial modulation of low-frequency spin fluctuations in hole-doped La2CuO4

  • K. Yamada
  • C. H. Lee
  • J. Wada
  • K. Kurahashi
  • H. Kimura
  • Y. Endoh
  • S. Hosoya
  • G. Shirane
  • R. J. Birgeneau
  • M. A. Kastner
Article

Abstract

Systematic neutron scattering measurements have been performed on the Sr-doped La{2-x}SrxCuO4 to study the doping dependence of spatially modulated dynamical spin correlations or so-called incommensurate spin fluctuations. The modulated spin correlations appear beyond x ≈ 0.05 which is close to the lower boundary of the superconducting phase. First evidence was observed for the linear relation between the degree of spatial modulation or the incommensurability Σ(x) and the maximumT c atx. We present a universal curve for Σ(x) by adding data from other La2CuO2 systems such as oxygen-doped superconductors, oxygen-reduced or Zn-substituted nonsuperconductors, and La1.6-xNd0.4SrxCuO4.

Key Words

La2CuO4 spin fluctuations neutron scattering 

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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • K. Yamada
    • 1
  • C. H. Lee
    • 1
  • J. Wada
    • 1
  • K. Kurahashi
    • 1
  • H. Kimura
    • 1
  • Y. Endoh
    • 1
  • S. Hosoya
    • 2
  • G. Shirane
    • 3
  • R. J. Birgeneau
    • 4
  • M. A. Kastner
    • 4
  1. 1.Department of PhysicsTohoku UniversitySendaiJapan
  2. 2.Institute of Inorganic Synthesis, Faculty of EngineeringYamanashi UniversityKofuJapan
  3. 3.Department of PhysicsBrookhaven National LaboratoryUpton
  4. 4.Department of PhysicsMassachusetts Institute of TechnologyCambridge

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