# Emergent quantum Hall effects below 50 mT in a two-dimensional topological insulator

@article{Shamim2020EmergentQH, title={Emergent quantum Hall effects below 50 mT in a two-dimensional topological insulator}, author={Saquib Shamim and Wouter Beugeling and Jan B{\"o}ttcher and Pragya Shekhar and Andreas Budewitz and Philipp Leubner and Lukas Lunczer and Ewelina M. Hankiewicz and Hartmut Buhmann and Laurens W. Molenkamp}, journal={Science Advances}, year={2020}, volume={6} }

Quantum Hall effects emerge at very low magnetic fields from helical edge channels in topological HgTe quantum wells. The realization of the quantum spin Hall effect in HgTe quantum wells has led to the development of topological materials, which, in combination with magnetism and superconductivity, are predicted to host chiral Majorana fermions. However, the large magnetization in conventional quantum anomalous Hall systems makes it challenging to induce superconductivity. Here, we report two…

## 20 Citations

### Effects of Charge Dopants in Quantum Spin Hall Materials.

- PhysicsPhysical review letters
- 2023

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,

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HgTe is a versatile topological material and has enabled the realization of a variety of topological states, including two- and three-dimensional (3D) topological insulators and topological…

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We present the theory and numerical evaluations of the backscattering rate determined by acceptor holes or Mn spins in HgTe and (Hg,Mn)Te quantum wells in the quantum spin Hall regime. The role of…

### Engineering axion insulator phase in superlattices with inversion symmetry breaking

- Physics
- 2022

We study theoretically the interplay between magnetism and topology in three-dimensional HgTe/MnTe superlattices stacked along the (001) axis. Our results show the evolution of the magnetic…

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We present a novel low-temperature (30 °C) atomic layer deposition process for hafnium oxide and apply the layers as gate dielectric to fabricate devices out of the thermally sensitive topological…

### Finite Field Transport Response of a Dilute Magnetic Topological Insulator-Based Josephson Junction.

- PhysicsNano letters
- 2022

Hybrid samples combining superconductors with magnetic topological insulators are a promising platform for exploring exotic new transport physics. We examine a Josephson junction of such a system…

### Counterpropagating topological and quantum Hall edge channels

- PhysicsNature Communications
- 2022

The survival of the quantum spin Hall edge channels in presence of an external magnetic field has been a subject of experimental and theoretical research. The inversion of Landau levels that…

### Topological states in superlattices of HgTe class of materials for engineering three-dimensional flat bands

- PhysicsPhysical Review Research
- 2022

In search of materials with three-dimensional ﬂat band dispersions, using ab-initio computations we investigate how topological phases evolve as a function of hydrostatic pressure and uniaxial strain…

### Engineering topological phases in triple HgTe/CdTe quantum wells

- PhysicsScientific Reports
- 2022

Quantum wells formed by layers of HgTe between Hg1-x\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy}…

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