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Double-exchange model study of multiferroic RMnO3 perovskites
Dong, S.1,2,3; Yu, R.1,2; Yunoki, S.4,5; Liu, J. -M.3,6; Dagotto, E.1,2
Corresponding AuthorDong, S.(saintdosnju@gmail.com)
2009-10-01
Source PublicationEUROPEAN PHYSICAL JOURNAL B
ISSN1434-6028
Volume71Issue:3Pages:339-344
AbstractIn this proceeding, recent theoretical investigations by the authors on the multiferroic RMnO3 perovskites are briefly reviewed at first. Using the double-exchange model, the realistic spiral spin order in undoped manganites such as TbMnO3 and DyMnO3 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 LaMnO3), to the spiral phase (as in TbMnO3), and finally to the E-type antiferromagnet (as in HoMnO3), 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 LaMnO3 and TbMnO3 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.
Funding OrganizationNSF ; Division of Materials Science and Engineering, U.S. DOE ; National Key Projects for Basic Research of China ; National Natural Science Foundation of China ; CREST-JST ; China Scholarship Council
DOI10.1140/epjb/e2009-00225-1
Indexed BySCI
Language英语
Funding ProjectNSF[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] ; CREST-JST ; China Scholarship Council
WOS Research AreaPhysics
WOS SubjectPhysics, Condensed Matter
WOS IDWOS:000271029200006
PublisherSPRINGER
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/98767
Collection中国科学院金属研究所
Corresponding AuthorDong, S.
Affiliation1.Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
2.Mat Sci & Technol Div, Oak Ridge Natl Lab, Oak Ridge, TN 38231 USA
3.Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China
4.RIKEN, Computat Condensed Matter Phys Lab, Wako, Saitama 3510198, Japan
5.Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
6.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Dong, S.,Yu, R.,Yunoki, S.,et al. Double-exchange model study of multiferroic RMnO3 perovskites[J]. EUROPEAN PHYSICAL JOURNAL B,2009,71(3):339-344.
APA Dong, S.,Yu, R.,Yunoki, S.,Liu, J. -M.,&Dagotto, E..(2009).Double-exchange model study of multiferroic RMnO3 perovskites.EUROPEAN PHYSICAL JOURNAL B,71(3),339-344.
MLA Dong, S.,et al."Double-exchange model study of multiferroic RMnO3 perovskites".EUROPEAN PHYSICAL JOURNAL B 71.3(2009):339-344.
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