Strain control of superlattice implies weak charge-lattice coupling in La0.5Ca0.5MnO3

被引：26

作者：

Cox, S ^{[1
]}

Rosten, E

Chapman, JC

Kos, S

Calderón, MJ

Kang, DJ

Littlewood, PB

Midgley, PA

Mathur, ND

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

[3] Cavendish Lab, Cambridge CB3 0HE, England

[4] Univ Maryland, Dept Phys, Condensed Matter Thoery Ctr, College Pk, MD 20742 USA

[5] Univ Cambridge, Nanosci Ctr, Cambridge CB3 0FF, England

[6] SAINT, Dept Phys, Suwon 440746, South Korea

[7] Sungkyunkwan Univ, CNNC, Suwon 440746, South Korea

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.73.132401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have recently argued that manganites do not possess stripes of charge order, implying that the electron-lattice coupling is weak [Loudon , Phys. Rev. Lett. 94, 097202 (2005)]. Here we independently argue the same conclusion based on transmission electron microscopy measurements of a nanopatterned epitaxial film of La0.5Ca0.5MnO3. In strain relaxed regions, the superlattice period is modified by 2% to 3% with respect to the parent lattice, suggesting that the two are not strongly tied.

引用

页数：4

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