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arXiv 1803.05092cond-mat.str-el
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f电子系统Edelstein效应的强增强

Strong enhancement of the Edelstein effect in f-electron systems

Robert Peters, Youichi Yanase

摘要:

当施加电场时,在具有破缺反转对称性的系统中发生的Edelstein效应产生自旋极化,这在自旋电子学应用中是最有利的。不幸的是,很明显,这种磁电效应在半导体中非常小。在这里,我们证明了相关效应可以强烈地增强磁电效应。特别是,我们观察到强烈的增强Edelstein效应在$f$ -电子系统的相干温度附近,其中的$f$ -电子改变其字符从本地到巡回。我们还表明,这种增强可以解释由传导电子和仍然本地化的$f$ -电子之间的耦合。

英文摘要:

The Edelstein effect occurring in systems with broken inversion symmetry generates a spin polarization when an electric field is applied, which is most advantageous in spintronics applications. Unfortunately, it became apparent that this kind of magnetoelectric effect is very small in semiconductors. We here demonstrate that correlation effects can strongly enhance the magnetoelectric effect. Particularly, we observe a strong enhancement of the Edelstein effect in $f$-electron systems close to the coherence temperature, where the $f$-electrons change their character from localized to itinerant. We furthermore show that this enhancement can be explained by a coupling between the conduction electrons and the still localized $f$-electrons.

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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