Origin of multiferroic spiral spin order in the RMnO3 perovskites
文献类型：期刊论文
| 作者 | Dong, Shuai1,2,3; Yu, Rong1,2; Yunoki, Seiji4; Liu, J. -M.3,5; Dagotto, Elbio1,2 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2008-10-01 |
| 卷号 | 78期号:15页码:6 |
| ISSN号 | 1098-0121 |
| DOI | 10.1103/PhysRevB.78.155121 |
| 通讯作者 | Dong, Shuai() |
| 英文摘要 | The origin of the spiral spin order in perovskite multiferroic manganites RMnO3 (R=Tb or Dy) is here investigated using a two e(g)-orbital double-exchange model. Our main result is that the experimentally observed spiral phase can be stabilized by introducing a relatively weak next-nearest-neighbor superexchange coupling (similar to 10% of the nearest-neighbor superexchange). Moreover, the Jahn-Teller lattice distortion is also shown to be essential to obtain a realistic spiral period. Supporting our conclusions, the generic phase diagram of undoped perovskite manganites is obtained using Monte Carlo simulations, showing phase transitions from the A-type antiferromagnet, to the spiral phase, and finally to the E-type antiferromagnet, with decreasing size of the R ions. These results are qualitatively explained by the enhanced relative intensity of the superexchanges. |
| 资助项目 | NSF[DMR-0706020] ; Division of Materials Science and Engineering, U. S. DOE ; National Key Projects for Basic Research of China[2006CB921802] ; National Key Projects for Basic Research of China[2009CB929501] ; National Natural Science Foundation of China[50832002] ; China Scholarship Council ; Scientific Research Foundation of Graduate School of Nanjing University |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000260574400060 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | NSF ; Division of Materials Science and Engineering, U. S. DOE ; National Key Projects for Basic Research of China ; National Natural Science Foundation of China ; China Scholarship Council ; Scientific Research Foundation of Graduate School of Nanjing University |
| 源URL | [http://ir.imr.ac.cn/handle/321006/94039]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Dong, Shuai |
| 作者单位 | 1.Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA 2.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA 3.Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China 4.RIKEN, Inst Phys & Chem Res, Computat Condensed Matter Phys Lab, Wako, Saitama 3510198, Japan 5.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Shuai,Yu, Rong,Yunoki, Seiji,et al. Origin of multiferroic spiral spin order in the RMnO3 perovskites[J]. PHYSICAL REVIEW B,2008,78(15):6. |
| APA | Dong, Shuai,Yu, Rong,Yunoki, Seiji,Liu, J. -M.,&Dagotto, Elbio.(2008).Origin of multiferroic spiral spin order in the RMnO3 perovskites.PHYSICAL REVIEW B,78(15),6. |
| MLA | Dong, Shuai,et al."Origin of multiferroic spiral spin order in the RMnO3 perovskites".PHYSICAL REVIEW B 78.15(2008):6. |
入库方式： OAI收割
来源：金属研究所
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