Origin of multiferroic spiral spin order in the RMnO3 perovskites

doi:10.1103/PhysRevB.78.155121

IMR OpenIR

	Origin of multiferroic spiral spin order in the RMnO3 perovskites
	Dong, Shuai 1,2,3; Yu, Rong 1,2; Yunoki, Seiji 4; Liu, J. -M.3,5; Dagotto, Elbio 1,2
通讯作者	Dong, Shuai()
	2008-10-01
发表期刊	PHYSICAL REVIEW B
ISSN	1098-0121
卷号	78 期号:15 页码:6
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 ; China Scholarship Council ; Scientific Research Foundation of Graduate School of Nanjing University
DOI	10.1103/PhysRevB.78.155121
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] ; China Scholarship Council ; Scientific Research Foundation of Graduate School of Nanjing University
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
WOS记录号	WOS:000260574400060
出版者	AMER PHYSICAL SOC
引用统计	被引频次：113[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/321006/94040
专题	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.