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arXiv · 1511.01742

From Coupled Rashba Electron and Hole Gas Layers to 3D Topological Insulators

Luka Trifunovic·Daniel Loss·Jelena Klinovaja
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Abstract

We introduce a system of stacked two-dimensional electron and hole gas layers with Rashba spin orbit interaction and show that the tunnel coupling between the layers induces a strong three- dimensional (3D) topological insulator phase. At each of the two-dimensional bulk boundaries we find the spectrum consisting of a single anistropic Dirac cone, which we show by analytical and numerical calculations. Our setup has a unit-cell consisting of four tunnel coupled Rashba layers and presents a synthetic strong 3D topological insulator and is distinguished by its rather high experimental feasibility.

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Luka Trifunovic, Daniel Loss, Jelena Klinovaja. 2015-11-05. From Coupled Rashba Electron and Hole Gas Layers to 3D Topological Insulators. https://doi.org/10.1103/physrevb.93.205406

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