Origin of the Magnetoelectric Coupling Effect in Pb(Zr0.2Ti0.8)O3/La0.8Sr0.2MnO3 Multiferroic Heterostructures

被引：317

作者：

Vaz, C. A. F. ^{[1
]}

Hoffman, J. ^{[1
]}

Segal, Y. ^{[1
]}

Reiner, J. W. ^{[1
]}

Grober, R. D. ^{[1
]}

Zhang, Z. ^{[2
]}

Ahn, C. H. ^{[1
]}

Walker, F. J. ^{[1
]}

机构：

[1] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 12期

关键词：

MN K-EDGE;

D O I：

10.1103/PhysRevLett.104.127202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electronic valence state of Mn in Pb(Zr0.2Ti0.8)O-3/La0.8Sr0.2MnO3 multiferroic heterostructures is probed by near edge x-ray absorption spectroscopy as a function of the ferroelectric polarization. We observe a temperature independent shift in the absorption edge of Mn associated with a change in valency induced by charge carrier modulation in the La0.8Sr0.2MnO3, demonstrating the electronic origin of the magnetoelectric effect. Spectroscopic, magnetic, and electric characterization shows that the large magnetoelectric response originates from a modified interfacial spin configuration, opening a new pathway to the electronic control of spin in complex oxide materials.

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页数：4

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