Muon Spin Rotation Measurements of Heterogeneous Field Response in   Overdoped La2-xSrxCuO4
  Transverse-field muon spin rotation measurements of overdoped La2-xSrxCuO4 reveal a large broadening of the local magnetic field distribution in response to applied field, persisting to high temperatures. The field-response is approximately Curie-Weiss like in temperature and is largest for the highest doping investigated. Such behaviour is contrary to the canonical Fermi-liquid picture commonly associated with the overdoped cuprates and implies extensive heterogeneity in this region of the phase diagram. A possible explanation for the result lies in regions of staggered magnetization about dopant cations, analogous to what is argued to exist in underdoped systems. 
G. J. MacDougall, A.A. Aczel, R. J. Birgeneau, T. Ito, H. Kim, S.-J.   Kim, J.A. Rodriguez, P. L. Russo, A. T. Savici, Y. J....