title: Ferromagnetic enhancement of CE-type spin ordering in (Pr,Ca)MnO3.
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.
authors.affiliation: Advanced Light Source, Lawrence Berkeley National Laboratory, California 94720, USA. szhou@lbl.gov
authors.forename: S Y
authors.initials: SY
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Zhu
authors.forename: M C
authors.initials: MC
authors.lastname: Langner
authors.forename: Y-D
authors.initials: YD
authors.lastname: Chuang
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authors.lastname: Yu
authors.forename: W L
authors.initials: WL
authors.lastname: Yang
authors.forename: A G
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authors.lastname: Cruz Gonzalez
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authors.lastname: Tahir
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authors.lastname: Rini
authors.forename: Y-H
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authors.lastname: Chu
authors.forename: R
authors.initials: R
authors.lastname: Ramesh
authors.forename: D-H
authors.initials: DH
authors.lastname: Lee
authors.forename: Y
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authors.lastname: Tomioka
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authors.initials: Y
authors.lastname: Tokura
authors.forename: Z
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authors.lastname: Hussain
authors.forename: R W
authors.initials: RW
authors.lastname: Schoenlein