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arXiv 1003.1752cond-mat.mtrl-sci
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Pb(Zr0)O3/La0 .8Sr0.2MnO3多铁性异质结构中磁电耦合效应的起源

Origin of the magnetoelectric coupling effect in Pb(Zr0.2Ti0.8)O3/La0.8Sr0.2MnO3 multiferroic heterostructures

C. A. F. Vaz, J. Hoffman, Y. Segal, J. W. Reiner, R. D. Grober, Z. Zhang, C. H. Ahn, F. J. Walker

摘要:

用近边X射线吸收谱研究了Pb(Zr0.2Ti0.8)O3/La0.8Sr0.2MnO3多铁性异质结构中Mn的电子价态与铁电极化的关系。我们观察到的Mn的吸收边与温度无关的位移与载流子调制引起的La0.8Sr0.2MnO3的化合价的变化,证明了磁电效应的电子起源。光谱,磁性和电学特性表明,大的磁电响应源于修改后的界面自旋配置,打开一个新的途径,在复杂的氧化物材料的电子自旋控制。

英文摘要:

The electronic valence state of Mn in Pb(Zr0.2Ti0.8)O3/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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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