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28 March 2024 |
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New Stacking Variations of the CE-type Structure in the Metal-Ordered Manganite YBaMn2O6 | H. Kageyama
; T. Nakajima
; M. Ichihara
; Y. Ueda
; H. Yoshizawa
; K. Ohoyama
; | Date: |
27 Aug 2002 | Subject: | Strongly Correlated Electrons | cond-mat.str-el | Abstract: | For the paramagnetic insulating phase in the metal-ordered manganite YBaMn2O6, the so-called CE-type of charge/orbital ordered state was observed within the monoclinic ab-plane, which is most commonly observed for the ordinary half doped manganites. However, TEM revealed a 4-fold periodicity along the c-axis, suggesting a new stacking pattern, where planes of the CE-type are built up according to the sequence [aabb...]. Interestingly, when th system enters into the antiferromagnetic state, this stacking pattern changes into [aaaa...] or [abab], suggesting close interplay between spins and orbitals. These features are discusses in terms of inherent structural alternation, i.e., the Y/Ba order along the c-axis. | Source: | arXiv, cond-mat/0208518 | Services: | Forum | Review | PDF | Favorites |
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