Double-exchange model study of multiferroic RMnO(3) perovskites
文献类型：期刊论文
| 作者 | S. Dong ; R. Yu ; S. Yunoki ; J. M. Liu ; E. Dagotto |
| 刊名 | European Physical Journal B
 |
| 出版日期 | 2009 |
| 卷号 | 71期号:3页码:339-344 |
| 关键词 | polarization |
| ISSN号 | 1434-6028 |
| 中文摘要 | In this proceeding, recent theoretical investigations by the authors on the multiferroic RMnO(3) perovskites are briefly reviewed at first. Using the double-exchange model, the realistic spiral spin order in undoped manganites such as TbMnO(3) and DyMnO(3) is well reproduced by incorporating a weak next-nearest neighbor superexchange (similar to 10% of nearest neighbor superexchange) and moderate Jahn-Teller distortion. The phase transitions from the A-type antiferromagnet (as in LaMnO(3)), to the spiral phase (as in TbMnO(3)), and finally to the E-type antiferromagnet (as in HoMnO(3)), with decreasing size of the R ions, were also explained. Moreover, new results of phase diagram of the three-dimensional lattice are also included. The ferromagnetic tendency recently discovered in the LaMnO(3) and TbMnO(3) thin films is explained by considering the substrate stress. Finally, the relationship between our double-exchange model and a previously used J(1)-J(2)-J(3) model is further discussed from the perspective of spin wave excitations. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31871]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | S. Dong,R. Yu,S. Yunoki,et al. Double-exchange model study of multiferroic RMnO(3) perovskites[J]. European Physical Journal B,2009,71(3):339-344. |
| APA | S. Dong,R. Yu,S. Yunoki,J. M. Liu,&E. Dagotto.(2009).Double-exchange model study of multiferroic RMnO(3) perovskites.European Physical Journal B,71(3),339-344. |
| MLA | S. Dong,et al."Double-exchange model study of multiferroic RMnO(3) perovskites".European Physical Journal B 71.3(2009):339-344. |
入库方式： OAI收割
来源：金属研究所
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