Multiferroic phase transitions in manganites RMnO_3：A two-orbital double exchange simulation
The semi-quantum two-orbital exchange model is used to investigate the effect of small rare-earth ion substitution on orthorhombic RMnO 3 with A-type antiferromagnetic order,using the Monte Carlo algorithm,exact diagonalization,and zero-temperature optimization approaches.It is revealed that the sub...
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| Published in | 中国物理B：英文版 Vol. 21; no. 10; pp. 456 - 461 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.10.2012
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 |
| DOI | 10.1088/1674-1056/21/10/107502 |
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| Abstract | The semi-quantum two-orbital exchange model is used to investigate the effect of small rare-earth ion substitution on orthorhombic RMnO 3 with A-type antiferromagnetic order,using the Monte Carlo algorithm,exact diagonalization,and zero-temperature optimization approaches.It is revealed that the substitution results in a rich multiferroic phase diagram where the coexisting A-type antiferromagnetic phase and spiral spin phase,pure spiral spin phase,coexisting spiral spin phase,the E-type antiferromagnetic phase,and the pure E-type antiferromagnetic phase emerge in sequence.The multiferroic phase transitions modulate substantially the electric polarization,which is consistent qualitatively with recent experiments. |
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| AbstractList | The semi-quantum two-orbital exchange model is used to investigate the effect of small rare-earth ion substitution on orthorhombic RMnO 3 with A-type antiferromagnetic order,using the Monte Carlo algorithm,exact diagonalization,and zero-temperature optimization approaches.It is revealed that the substitution results in a rich multiferroic phase diagram where the coexisting A-type antiferromagnetic phase and spiral spin phase,pure spiral spin phase,coexisting spiral spin phase,the E-type antiferromagnetic phase,and the pure E-type antiferromagnetic phase emerge in sequence.The multiferroic phase transitions modulate substantially the electric polarization,which is consistent qualitatively with recent experiments. |
| Author | 陶永梅 林林 董帅 刘俊明 |
| AuthorAffiliation | Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu 215500, China |
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| DOI | 10.1088/1674-1056/21/10/107502 |
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| DocumentTitleAlternate | Multiferroic phase transitions in manganites RMnO_3：A two-orbital double exchange simulation |
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| Notes | Tao Yong-Mei ,Lin Lin ,Dong Shuai ,and Liu Jun-Ming（1. Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China b） Jiangsu Laboratory of Advanced Functional Materials,Changshu Institute of Technology,Changshu 215500,China 11-5639/O4 multiferroic phase; R-site doping; two-orbital exchange model The semi-quantum two-orbital exchange model is used to investigate the effect of small rare-earth ion substitution on orthorhombic RMnO 3 with A-type antiferromagnetic order,using the Monte Carlo algorithm,exact diagonalization,and zero-temperature optimization approaches.It is revealed that the substitution results in a rich multiferroic phase diagram where the coexisting A-type antiferromagnetic phase and spiral spin phase,pure spiral spin phase,coexisting spiral spin phase,the E-type antiferromagnetic phase,and the pure E-type antiferromagnetic phase emerge in sequence.The multiferroic phase transitions modulate substantially the electric polarization,which is consistent qualitatively with recent experiments. |
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| SubjectTerms | 双交换 双轨道 反铁磁 模拟 相变 稀土离子 蒙特卡罗算法 铁磁相 |
| Title | Multiferroic phase transitions in manganites RMnO_3：A two-orbital double exchange simulation |
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