Liquidlike spatial distribution of magnetic droplets revealed by neutron scattering in La1-xCaxMnO3

被引：214

作者：

Hennion, M ^{[1
]}

Moussa, F

Biotteau, G

Rodriguez-Carvajal, J

Pinsard, L

Revcolevschi, A

机构：

[1] CENS, CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

[2] Univ Paris Sud, Lab Chim Solides, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.81.1957

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Elastic neutron scattering experiments, performed in semiconducting La1-xCaxMnO3 single crystals (x = 0.05, 0.08), reveal new features in the problem of electronic phase separation and metal insulator transition. Below T-N, the observation of a broad magnetic modulation in the q-dependent elastic scattering intensity, centered at nearly identical q(m) whatever the q direction, can be explained by a liquidlike spatial distribution of similar magnetic droplets. A semiquantitative description of their magnetic state, diameter, and average distance can be done. Such a picture can explain the anomalous characteristics of the spin wave branches previously observed.

引用

页码：1957 / 1960

页数：4

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