Tailoring Magnetic Interlayer Coupling in La0.7Sr0.3MnO3/SrRuO3 Superlattices

被引：132
|
作者：
Ziese, M. [1 ]
Vrejoiu, I. [2 ]
Pippel, E. [2 ]
Esquinazi, P. [1 ]
Hesse, D. [2 ]
Etz, C. [2 ]
Henk, J. [2 ]
Ernst, A. [2 ]
Maznichenko, I. V. [3 ]
Hergert, W. [3 ]
Mertig, I. [2 ,3 ]
机构：
[1] Univ Leipzig, Abt Supraleitung & Magnetismus, D-04103 Leipzig, Germany
[2] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany
[3] Univ Halle Wittenberg, Inst Phys, D-06099 Halle, Germany
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 16期
关键词：
POSITIVE EXCHANGE BIAS; LATTICE DISTORTION; MANGANITES; ANISOTROPY; BILAYERS; FILMS;
D O I：
10.1103/PhysRevLett.104.167203
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The magnetic interlayer coupling in La0.7Sr0.3MnO3/SrRuO3 superlattices was investigated. High quality superlattices with ultrathin La0.7Sr0.3MnO3 and SrRuO3 layers were fabricated by pulsed laser deposition. The superlattices grew coherently with Mn/Ru intermixing restricted to about one interfacial monolayer. Strong antiferromagnetic interlayer coupling depended delicately on magnetocrystalline anisotropy and intermixing at interfaces. Ab initio calculations elucidated that the antiferromagnetic coupling is mediated by the Mn-O-Ru bond. The theoretical calculations allowed for a quantitative correlation between the total magnetic moment of the superlattice and the degree of Mn/Ru intermixing.
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页数：4
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