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Manganite/Cuprate Superlattice as Artificial Reentrant Spin Glass
Ding, Junfeng; Cossu, Fabrizio; Lebedev, Oleg I.; Zhang, Yuqin; Zhang, Zhidong; Schwingenschlogl, Udo; Wu, Tom; Wu, T (reprint author), King Abdullah Univ Sci & Technol, Mat Sci & Engn, Thuwal 239556900, Saudi Arabia.
2016-07-22
发表期刊ADVANCED MATERIALS INTERFACES
ISSN2196-7350
卷号3期号:14
摘要Emerging physical phenomena at the unit-cell-controlled interfaces of transition-metal oxides have attracted lots of interest because of the rich physics and application opportunities. This work reports a reentrant spin glass behavior with strong magnetic memory effect discovered in oxide heterostructures composed of ultrathin manganite La0.7Sr0.3MnO3 (LSMO) and cuprate La2CuO4 (LCO) layers. These heterostructures are featured with enhanced ferromagnetism before entering the spin glass state: a Curie temperature of 246 K is observed in the superlattice with six-unit-cell LSMO layers, while the reference LSMO film with the same thickness shows much weaker magnetism. Furthermore, an insulator-metal transition emerges at the Curie temperature, and below the freezing temperature the superlattices can be considered as a glassy ferromagnetic insulator. These experimental results are closely related to the interfacial spin reconstruction revealed by the first-principles calculations, and the dependence of the reentrant spin glass behavior on the LSMO layer thickness is in line with the general phase diagram of a spin system derived from the infinite-range SK model. The results of this work underscore the manganite/cuprate superlattices as a versatile platform of creating artificial materials with tailored interfacial spin coupling and physical properties.
部门归属[ding, junfeng ; cossu, fabrizio ; schwingenschlogl, udo ; wu, tom] king abdullah univ sci & technol, mat sci & engn, thuwal 239556900, saudi arabia ; [ding, junfeng] chinese acad sci, inst solid state phys, key lab mat phys, hefei 230031, peoples r china ; [lebedev, oleg i.] cnrs ensicaen, crismat, umr 6508, 6bd marechal juin, f-14050 caen, france ; [zhang, yuqin ; zhang, zhidong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
学科领域Chemistry ; Materials Science
资助者King Abdullah University of Science and Technology (KAUST); Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75789
专题中国科学院金属研究所
通讯作者Wu, T (reprint author), King Abdullah Univ Sci & Technol, Mat Sci & Engn, Thuwal 239556900, Saudi Arabia.
推荐引用方式
GB/T 7714
Ding, Junfeng,Cossu, Fabrizio,Lebedev, Oleg I.,et al. Manganite/Cuprate Superlattice as Artificial Reentrant Spin Glass[J]. ADVANCED MATERIALS INTERFACES,2016,3(14).
APA Ding, Junfeng.,Cossu, Fabrizio.,Lebedev, Oleg I..,Zhang, Yuqin.,Zhang, Zhidong.,...&Wu, T .(2016).Manganite/Cuprate Superlattice as Artificial Reentrant Spin Glass.ADVANCED MATERIALS INTERFACES,3(14).
MLA Ding, Junfeng,et al."Manganite/Cuprate Superlattice as Artificial Reentrant Spin Glass".ADVANCED MATERIALS INTERFACES 3.14(2016).
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