Abstract
We have performed inelastic neutron scattering measurements on the single-layer cuprate (Bi2201) with , 0.3, 0.4, and 0.5, a doping range that spans the spin-glass to superconducting phase boundary. The doping evolution of low energy spin fluctuations () was found to be characterized by a change in the incommensurate modulation wave vector from the tetragonal [110] to [100]/[010] directions, while maintaining a linear relation between the incommensurability and the hole concentration, . In the superconducting regime, the spectral weight is strongly suppressed below . Similarities and differences in the spin correlations between Bi2201 and the prototypical single-layer system are discussed.
- Received 17 May 2012
DOI:https://doi.org/10.1103/PhysRevLett.110.017004
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