Ferromagnetic enhancement of CE-type spin ordering in (Pr,Ca)MnO3 |
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| Authors: | Zhou S Y Zhu Y Langner M C Chuang Y-D Yu P Yang W L Cruz Gonzalez A G Tahir N Rini M Chu Y-H Ramesh R Lee D-H Tomioka Y Tokura Y Hussain Z Schoenlein R W |
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| Institution: | Advanced Light Source, Lawrence Berkeley National Laboratory, California 94720, USA. szhou@lbl.gov |
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| Abstract: | We present resonant soft x-ray scattering results from small bandwidth 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 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 state and CE-type ordering. |
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