Magnetic and orbital order in (RMnO3)(n)/(AMnO(3))(2n) superlattices studied via a double-exchange model with strain
文献类型：期刊论文
| 作者 | S. Dong ; Q. F. Zhang ; S. Yunoki ; J. M. Liu ; E. Dagotto |
| 刊名 | Physical Review B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:20 |
| 关键词 | oxide interfaces phase-separation electronics manganites bias |
| ISSN号 | 1098-0121 |
| 中文摘要 | The two-orbital double-exchange model is employed for the study of the magnetic and orbital orders in (RMnO3)(n)/(AMnO(3))(2n) (R: rare earths; A: alkaline-earth metal) superlattices. The A-type antiferromagnetic order is observed in a broad region of parameter space for the case of SrTiO3 as substrate, in agreement with recent experiments and first-principles calculations using these superlattices. In addition, a C-type antiferromagnetic state is also predicted to be stabilized when using substrates like LaAlO3 with smaller lattice constants than SrTiO3, again in agreement with first-principles results. The physical mechanism for the stabilization of the A and C magnetic transitions is driven by the orbital splitting of the x(2) - y(2) and 3z(2) - r(2) orbitals. This splitting is induced by the Q(3) mode of Jahn-Teller distortions created by the strain induced by the substrates. In addition to the special example of (LaMnO3)(n)/(SrMnO3)(2n), our phase diagrams can be valuable for the case where the superlattices are prepared employing narrow bandwidth manganites. In particular, several nonhomogenous magnetic profiles are predicted to occur in narrow-bandwidth superlattices, highlighting the importance of carrying out investigations in this mostly unexplored area of research. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/59929]  |
| 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,Q. F. Zhang,S. Yunoki,et al. Magnetic and orbital order in (RMnO3)(n)/(AMnO(3))(2n) superlattices studied via a double-exchange model with strain[J]. Physical Review B,2012,86(20). |
| APA | S. Dong,Q. F. Zhang,S. Yunoki,J. M. Liu,&E. Dagotto.(2012).Magnetic and orbital order in (RMnO3)(n)/(AMnO(3))(2n) superlattices studied via a double-exchange model with strain.Physical Review B,86(20). |
| MLA | S. Dong,et al."Magnetic and orbital order in (RMnO3)(n)/(AMnO(3))(2n) superlattices studied via a double-exchange model with strain".Physical Review B 86.20(2012). |
入库方式： OAI收割
来源：金属研究所
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