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

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.

4+ pages, 6 figures

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Cited by in corpus (9)

• Entanglement Entropy From Tensor Network States for Stabilizer Codes
• A simple anisotropic three-dimensional quantum spin liquid with fracton topological order
• Coupled-wire constructions: a Luttinger liquid approach to topology
• Hinge states in a system of coupled Rashba layers
• Anomalous Floquet topological crystalline insulators
• Three-Dimensional Fractional Topological Insulators in Coupled Rashba Layers
• Topological crystalline insulators from stacked graphene layers
• Fermi Surface Resonance and Quantum Criticality in Strongly Interacting Fermi Gases
• Artificial oxide heterostructures with non-trivial topology