Abstract
We use neutron scattering to investigate the doping evolution of the magnetic correlations in the single-layer manganite , away from the composition where the CE-type commensurate antiferromagnetic (AF) structure is stable. We find that short-range incommensurate spin correlations develop as the system is electron doped (), which coexist with the CE-type AF order. This suggests that electron doping in this system induces an inhomogeneous electronic self-organization, where commensurate AF patches with are separated by electron-rich domain walls with short-range magnetic correlations. This behavior is strikingly different than for the perovskite , where the long-range CE-type commensurate AF structure is stable over a wide range of electron or hole doping around .
- Received 2 April 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.167202
©2009 American Physical Society