Confined spin waves reveal an assembly of nanosize domains in ferromagnetic La1-xCaxMnO3 (x=0.17,0.2)
文献类型：期刊论文
| 作者 | Hennion, M ; Moussa, F ; Lehouelleur, P ; Wang, F ; Ivanov, A ; Mukovskii, YM ; Shulyatev, D |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2005 |
| 卷号 | 94期号:5 |
| 关键词 | NEUTRON-SCATTERING MAGNETIC POLARONS |
| ISSN号 | 0031-9007 |
| 通讯作者 | Hennion, M: CEA Saclay, CNRS, CEA, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. |
| 中文摘要 | We report a study of spin waves in ferromagnetic La1-xCaxMnO3, at concentrations x=0.17 and x=0.2 very close to the metallic transition (x=0.225). Below T-C, in the quasimetallic state (T=150 K), nearly q-independent energy levels are observed. They are characteristic of standing spin waves confined into finite-size ferromagnetic domains, defined only in the (a,b) plane for x=0.17, and in all directions for x=0.2. They allow an estimation of the domain's size, a few lattice spacings, and of the magnetic coupling constants inside the domains. These constants, anisotropic, are typical of an orbital-ordered state, allowing one to characterize the domains as "hole poor." The precursor state of the colossal magnetoresistance metallic phase appears, therefore, as an assembly of small orbital-ordered domains. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35044]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Hennion, M,Moussa, F,Lehouelleur, P,et al. Confined spin waves reveal an assembly of nanosize domains in ferromagnetic La1-xCaxMnO3 (x=0.17,0.2)[J]. PHYSICAL REVIEW LETTERS,2005,94(5). |
| APA | Hennion, M.,Moussa, F.,Lehouelleur, P.,Wang, F.,Ivanov, A.,...&Shulyatev, D.(2005).Confined spin waves reveal an assembly of nanosize domains in ferromagnetic La1-xCaxMnO3 (x=0.17,0.2).PHYSICAL REVIEW LETTERS,94(5). |
| MLA | Hennion, M,et al."Confined spin waves reveal an assembly of nanosize domains in ferromagnetic La1-xCaxMnO3 (x=0.17,0.2)".PHYSICAL REVIEW LETTERS 94.5(2005). |
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来源：物理研究所
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