Commensurate to incommensurate charge ordering and its real-space images in La0.5Ca0.5MnO3

被引:555
作者
Chen, CH
Cheong, SW
机构
[1] Bell Laboratories, Lucent Technologies, Murray Hill, NJ
关键词
D O I
10.1103/PhysRevLett.76.4042
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The antiferromagnetic to ferromagnetic transition in La0.5Ca0.5MnO3 is accompanied by a commensurate to incommensurate charge-ordering transition. The presence of incommensurate charge correlation in the ferromagnetic phase is a remarkable interplay between charge and spin in double-exchange ferromagnets. Furthermore, a dark-field imaging technique has provided real-space images of charge-ordered domains revealing discommensurations inside the nearly commensurate domains. Local density fluctuations of discommensurations are responsible for the similar variations of the charge-ordering wave vector.
引用
收藏
页码:4042 / 4045
页数:4
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