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arXiv · 1512.03119

Class of Rashba ferroelectrics in hexagonal semiconductors

Awadhesh Narayan
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Abstract

We present a class of Rashba systems in hexagonal semiconducting compounds, where an electrical control over spin-orbital texture is provided by their bulk ferroelectricity. Our first-principles calculations reveal a number of such materials with large Rashba coefficients. We, furthermore, show that strain can drive a topological phase transition in such materials, resulting in a ferroelectric topological insulating state. Our findings can open avenues for interplay between Rashba effect, ferroelectricity and topological phenomena.

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Awadhesh Narayan. 2016-05-02. Class of Rashba ferroelectrics in hexagonal semiconductors. https://doi.org/10.1103/physrevb.92.220101

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