气候变化领域集成服务门户(CCPortal): Interface-induced multiferroism by design in complex oxide superlattices

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DOI	10.1073/pnas.1706814114
	Interface-induced multiferroism by design in complex oxide superlattices
	Guo H.; Wang Z.; Dong S.; Ghosh S.; Saghayezhian M.; Chen L.; Weng Y.; Herklotz A.; Ward T.Z.; Jin R.; Pantelides S.T.; Zhu Y.; Zhang J.; Plummer E.W.
发表日期	2017
ISSN	0027-8424
起始页码	E5062
结束页码	E5069
卷号	114 期号:26
英文摘要	Interfaces between materials present unique opportunities for the discovery of intriguing quantum phenomena. Here, we explore the possibility that, in the case of superlattices, if one of the layers is made ultrathin, unexpected properties can be induced between the two bracketing interfaces. We pursue this objective by combining advanced growth and characterization techniques with theoretical calculations. Using prototype La2/3Sr1/3MnO3 (LSMO)/BaTiO3 (BTO) superlattices, we observe a structural evolution in the LSMO layers as a function of thickness. Atomic-resolution EM and spectroscopy reveal an unusual polar structure phase in ultrathin LSMO at a critical thickness caused by interfacing with the adjacent BTO layers, which is confirmed by first principles calculations. Most important is the fact that this polar phase is accompanied by reemergent ferromagnetism, making this system a potential candidate for ultrathin ferroelectrics with ferromagnetic ordering. Monte Carlo simulations illustrate the important role of spin-lattice coupling in LSMO. These results open up a conceptually intriguing recipe for developing functional ultrathin materials via interface-induced spin-lattice coupling.
英文关键词	Interfaces; Magnetic/electric; Spin-lattice coupling; Structural transition; Ultrathin films
语种	英语
scopus关键词	barium ion; lanthanum; manganese; oxide; oxygen; titanium; Article; atomically resolved electron microscopy; electric field; electron energy loss spectroscopy; evolution; magnetic field; Monte Carlo method; phase separation; priority journal; scanning transmission electron microscopy; spectroscopy; thickness; X ray diffraction
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160619
作者单位	Guo, H., Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States; Wang, Z., Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States; Dong, S., School of Physics, Southeast University, Nanjing, 211189, China; Ghosh, S., Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, United States, Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, United States, Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; Saghayezhian, M., Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States; Chen, L., Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States; Weng, Y., School of ...
推荐引用方式 GB/T 7714	Guo H.,Wang Z.,Dong S.,et al. Interface-induced multiferroism by design in complex oxide superlattices[J],2017,114(26).
APA	Guo H..,Wang Z..,Dong S..,Ghosh S..,Saghayezhian M..,...&Plummer E.W..(2017).Interface-induced multiferroism by design in complex oxide superlattices.Proceedings of the National Academy of Sciences of the United States of America,114(26).
MLA	Guo H.,et al."Interface-induced multiferroism by design in complex oxide superlattices".Proceedings of the National Academy of Sciences of the United States of America 114.26(2017).