Spin-stripe density varies linearly with hole content in single-layer Bi2201 cuprate

M. Enoki; M. Fujita; T. Nishizaki; S. Iikubo; D. K. Singh; S. Chang; J. M. Tranquada; K. Yamada

doi:10.1103/PhysRevLett.110.017004

Spin-stripe density varies linearly with hole content in single-layer Bi2201 cuprate

Strongly Correlated Electrons 2013-02-06 v2

Authors: M. Enoki , M. Fujita , T. Nishizaki , S. Iikubo , D. K. Singh , S. Chang , J. M. Tranquada , K. Yamada

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Abstract

We have performed inelastic neutron scattering measurements on the single-layer cuprate Bi2+xSr2-xCuO6+y (Bi2201) with x=0.2, 0.3, 0.4 and 0.5, a doping range that spans the spin-glass (SG) to superconducting (SC) phase boundary. The doping evolution of low energy spin fluctuations was found to be characterized by a change of incommensurate modulation wave vector from the tetragonal [110] to [100]/[010] directions, while maintaining a linear relation between the incommensurability and the hole concentration, delta p. In the SC regime, the spectral weight is strongly suppressed below 4 meV. Similarities and differences in the spin correlations between Bi2201 and the prototypical single-layer system La2-xSrxCuO4 are discussed.

Keywords

spin-stripe inelastic neutron scattering Bi2201 cuprate incommensurate modulation hole doping spin fluctuations

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@article{arxiv.1205.3301,
  title  = {Spin-stripe density varies linearly with hole content in single-layer Bi2201 cuprate},
  author = {M. Enoki and M. Fujita and T. Nishizaki and S. Iikubo and D. K. Singh and S. Chang and J. M. Tranquada and K. Yamada},
  journal= {arXiv preprint arXiv:1205.3301},
  year   = {2013}
}

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Spin-stripe density varies linearly with hole content in single-layer Bi2201 cuprate

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