Ferromagnetism in ultrathin surface-free La0.7Sr0.3MnO3 layers in electrostatically defined heterostructures

被引：0
作者：
Galdi, A. [1 ,2 ]
Coppola, N. [2 ]
Sacco, C. [2 ]
Maritato, L. [2 ]
Bencok, P. [3 ]
Steadman, P. [3 ]
Orgiani, P. [4 ,5 ]
Aruta, C. [6 ]
机构：
[1] Cornell Univ, Cornell Lab Accelerator Based Sci & Educ, Ithaca, NY 14853 USA
[2] Univ Salerno, Dipartimento Ingn Ind, I-84084 Fisciano, SA, Italy
[3] Diamond Light Source, Didcot OX11 0DE, Oxon, England
[4] CNR IOM, TASC Lab, Area Sci Pk, I-34139 Trieste, Italy
[5] CNR SPIN, UOS Salerno, I-84084 Fisciano, Italy
[6] CNR SPIN, UOS Roma, Area Ric Tor Vergata, I-00133 Rome, Italy
来源：
PHYSICAL REVIEW MATERIALS | 2021年 / 5卷 / 08期
关键词：
MAGNETIC-ANISOTROPY; MANGANITE; CONFINEMENT; INTERFACE;
D O I：
10.1103/PhysRevMaterials.5.084409
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrostatically defined perovskite oxide heterostructures, in which carriers are confined by the modulation of the A-site ion charge, offer new possibilities of tuning the magnetic properties of manganite oxides. We investigate the preferential orientation of ferromagnetic and antiferromagnetic moments in ultrathin La0.7Sr0.3MnO3 layers embedded in antiferromagnetic SrMnO3 as they undergo a metal-to-insulator transition with decreasing thickness. Our results evince the role of orbital occupation, metallicity, and competition of different magnetic phases, in absence of spurious effects occurring in thin films as a result of symmetry breaking at La0.7Sr0.3MnO3 interfaces and of incorporation of oxygen vacancies.
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页数：9
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