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arXiv · 1104.0757

Ferromagnetic Enhancement of CE-type Spin Ordering in (Pr,Ca)MnO$_3$

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. Ramesh·D. -H. Lee·Y. Tomioka·Z. Hussain·R. W. Schoenlein
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Abstract

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.

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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. Ramesh, D. -H. Lee, Y. Tomioka, Z. Hussain, R. W. Schoenlein. 2011-04-05. Ferromagnetic Enhancement of CE-type Spin Ordering in (Pr,Ca)MnO$_3$. https://doi.org/10.1103/physrevlett.106.186404

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