%0 Journal Article
%T Spin-stripe density varies linearly with hole content in single-layer Bi2201 cuprate
%A M. Enoki
%A M. Fujita
%A T. Nishizaki
%A S. Iikubo
%A D. K. Singh
%A S. Chang
%A J. M. Tranquada
%A K. Yamada
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevLett.110.017004
%X 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.
%U http://arxiv.org/abs/1205.3301v2