Ferromagnetic Enhancement of CE-type Spin Ordering in (Pr,Ca)MnO$_3$
  We present resonant soft X-ray scattering (RSXS) results from small band width manganites (Pr,Ca)MnO$_3$, which show that the CE-type spin ordering (SO) at the phase boundary is stabilized only below the canted antiferromagnetic transition temperature and enhanced by ferromagnetism in the macroscopically insulating state (FM-I). Our results reveal the fragility of the CE-type ordering that underpins the colossal magnetoresistance (CMR) effect in this system, as well as an unexpected cooperative interplay between FM-I and CE-type SO which is in contrast to the competitive interplay between the ferromagnetic metallic (FM-M) state and CE-type ordering. 
S.Y. Zhou, Y. Zhu, M.C. Langner, Y.-D. Chuang, P. Yu, W.L. Yang, A.G.   Cruz Gonzalez, N. Tahir, M. Rini, Y.-H. Chu, R. Rame...
cond-mat.str-el cond-mat.mtrl-sci