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arXiv · 1504.04091

Coupling ferroelectricity with spin-valley physics in oxide-based heterostructure

Kunihiko Yamauchi·Paolo Barone·Tatsuya Shishidou·Tamio Oguchi·Silvia Picozzi
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Abstract

The coupling of spin and valley physics is nowadays regarded as a promising route toward next-generation spintronic and valleytronic devices. In the aim of engineering functional properties for valleytronic applications, we focus on the ferroelectric heterostructure BiAlO3/BiIrO3, where the complex interplay among trigonal crystal field, layer degrees of freedom and spin-orbit coupling mediates a strong spin-valley coupling. Furthermore, we show that ferroelectricity provides a non-volatile handle to manipulate and switch the emerging valley-contrasting spin polarization.

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Kunihiko Yamauchi, Paolo Barone, Tatsuya Shishidou, Tamio Oguchi, Silvia Picozzi. 2015-04-16. Coupling ferroelectricity with spin-valley physics in oxide-based heterostructure. https://doi.org/10.1103/physrevlett.115.037602

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