Strain effects on stability of topological ferroelectric polar configurations in (PbTiO3)(n)/(SrTiO3)(n) superlattices

doi:10.1063/5.0160901

IMR OpenIR

	Strain effects on stability of topological ferroelectric polar configurations in (PbTiO3)(n)/(SrTiO3)(n) superlattices
	Dai, Cheng 1,2; Hong, Zijian 3; Das, Sujit 4; Tang, Yun-Long 5,6; Martin, Lane W.5; Ramesh, Ramamoorthy 5; Chen, Long-Qing 1,2
通讯作者	Dai, Cheng(daicheng1993313@gmail.com) ; Chen, Long-Qing(lqc3@psu.edu)
	2023-07-31
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	123 期号:5 页码:5
摘要	The (PbTiO3)(n)/(SrTiO3)(n) (PTO/STO) superlattice system has been shown to exhibit interesting topological phases (e.g., vortices and skyrmions) in addition to normal ferroelectric domain states. Existing studies are mostly focused on the dependence of topological polar distributions and properties of PTO/STO superlattice on its periodicity. Here, we study the strain effect on the topological phase transitions and ferroelectric domain structures employing phase-field simulations. We summarized in an isotropic strain (in-plane misfit strain along the x direction is equal to that along the y direction) periodicity phase diagram displaying the stability regions of different polar topological states, including normal ferroelectric twins, vortices, skyrmions, and mixtures of vortices and twins. We also analyzed the polarization configurations under anisotropic in-plane strains (in-plane misfit strain along the x direction is not equal to that along the y direction) and demonstrated that the strain anisotropy can be used to tune the directions of vortex arrays along either the [100] (pc) or [010] (pc) directions or labyrinth vortex arrays. This work offers guidance to manipulating polar structures in the PTO/STO superlattices via strain engineering.
资助者	U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences ; Office of Basic Energy Sciences, U.S. Department of Energy ; Army Research Office ; Science and Engineering Research Board ; Indian Institute of Science
DOI	10.1063/5.0160901
收录类别	SCI
语种	英语
资助项目	U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences[DE-SC-0012375] ; Office of Basic Energy Sciences, U.S. Department of Energy[DE-AC02-05CH11231] ; Army Research Office[W911NF-21-2-0162] ; Science and Engineering Research Board[SRG/2022/000058] ; Indian Institute of Science
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:001042941800001
出版者	AIP Publishing
引用统计	被引频次：10[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/321006/178823
专题	中国科学院金属研究所
通讯作者	Dai, Cheng; Chen, Long-Qing
作者单位	1.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA 2.Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA 3.Zhejiang Univ, Sch Mat Sci & Engn, Lab Dielect Mat, Hangzhou 310027, Peoples R China 4.Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India 5.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA 6.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Dai, Cheng,Hong, Zijian,Das, Sujit,et al. Strain effects on stability of topological ferroelectric polar configurations in (PbTiO3)(n)/(SrTiO3)(n) superlattices[J]. APPLIED PHYSICS LETTERS,2023,123(5):5.
APA	Dai, Cheng.,Hong, Zijian.,Das, Sujit.,Tang, Yun-Long.,Martin, Lane W..,...&Chen, Long-Qing.(2023).Strain effects on stability of topological ferroelectric polar configurations in (PbTiO3)(n)/(SrTiO3)(n) superlattices.APPLIED PHYSICS LETTERS,123(5),5.
MLA	Dai, Cheng,et al."Strain effects on stability of topological ferroelectric polar configurations in (PbTiO3)(n)/(SrTiO3)(n) superlattices".APPLIED PHYSICS LETTERS 123.5(2023):5.