Steplike lattice deformation of single crystalline (La0.4Pr0.6)1.2Sr1.8Mn2O7 bilayered manganite

被引：17
|
作者：
Matsukawa, M. [1 ]
Yamato, Y.
Kumagai, T.
Tamura, A.
Suryanarayanan, R.
Nimori, S.
Apostu, M.
Revcolevschi, A.
Koyama, K.
Kobayashi, N.
机构：
[1] Iwate Univ, Dept Mat Sci & Technol, Morioka, Iwate 0208551, Japan
[2] Univ Paris 11, CNRS, UMR8182, Lab Phys Chim Etat Solide, F-91405 Orsay, France
[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 26期
关键词：
D O I：
10.1103/PhysRevLett.98.267204
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report a steplike lattice transformation of single crystalline (La0.4Pr0.6)(1.2)Sr1.8Mn2O7 bilayered manganite accompanied by both magnetization and magnetoresistive jumps, and examine the ultrasharp nature of the field-induced first-order transition from a paramagnetic insulator to a ferromagnetic metal phase accompanied by a huge decrease in resistance. Our findings support that the abrupt magnetostriction is closely related to an orbital frustration existing in the inhomogeneous paramagnetic insulating phase rather than a martensitic scenario between competing two phases.
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页数：4
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