Double-exchange model study of multiferroic RMnO3 perovskites

doi:10.1140/epjb/e2009-00225-1

IMR OpenIR

	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
通讯作者	Dong, S.(saintdosnju@gmail.com)
	2009-10-01
发表期刊	EUROPEAN PHYSICAL JOURNAL B
ISSN	1434-6028
卷号	71 期号:3 页码:339-344
摘要	In 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.
资助者	NSF ; 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
DOI	10.1140/epjb/e2009-00225-1
收录类别	SCI
语种	英语
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] ; CREST-JST ; China Scholarship Council
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
WOS记录号	WOS:000271029200006
出版者	SPRINGER
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/98767
专题	中国科学院金属研究所
通讯作者	Dong, S.
作者单位	1.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
推荐引用方式 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.