# Proximity-induced superconducting gap in the quantum spin Hall edge state of monolayer WTe2

@article{Lpke2020ProximityinducedSG, title={Proximity-induced superconducting gap in the quantum spin Hall edge state of monolayer WTe2}, author={Felix L{\"u}pke and Dacen Waters and Sergio C. de la Barrera and Michael Widom and David G. Mandrus and Jiaqiang Yan and Randall M. Feenstra and Benjamin M. Hunt}, journal={Nature Physics}, year={2020} }

The quantum spin Hall (QSH) state was recently demonstrated in monolayers of the transition metal dichalcogenide 1T'-WTe$_2$ and is characterized by a band gap in the two-dimensional (2D) interior and helical one-dimensional (1D) edge states. Inducing superconductivity in the helical edge states would result in a 1D topological superconductor, a highly sought-after state of matter. In the present study, we use a novel dry-transfer flip technique to place atomically-thin layers of WTe$_2$ on a…

## 39 Citations

Electric field effects on the band gap and edge states of monolayer 1T'-WTe2

- Physics
- 2020

Monolayer 1T'-WTe2 is a quantum spin Hall insulator with a gapped bulk and gapless helical edge states persisting to temperatures around 100 K. Recent studies have revealed a topological-to-trivial…

Quantum spin Hall edge states in twisted-bilayer 1T'-WTe$_2$

- Physics
- 2020

The quantum spin Hall (QSH) effect, characterized by topologically protected spin-polarized edge states, was recently demonstrated in monolayers of the transition metal dichalcogenide (TMD)…

Quantum Spin Hall Edge States and Interlayer Coupling in Twisted Bilayer WTe2.

- PhysicsNano letters
- 2022

The quantum spin Hall (QSH) effect, characterized by topologically protected spin-polarized edge states, was recently demonstrated in monolayers of the transition metal dichalcogenide (TMD) WTe2.…

Local manifestations of thickness-dependent topology and edge states in the topological magnet
MnBi2Te4

- PhysicsPhysical Review B
- 2022

The interplay of non-trivial band topology and magnetism gives rise to a series of exotic quantum phenomena, such as the emergent quantum anomalous Hall (QAH) effect and topological magnetoelectric…

Determination of the Spin Axis in Quantum Spin Hall Insulator Candidate Monolayer
WTe2

- PhysicsPhysical Review X
- 2021

Evidence for the quantum spin Hall (QSH) effect has been reported in several experimental systems in the form of approximately quantized edge conductance. However, the most fundamental feature of the…

Robust topological edge states and superconductivity in few-layer stanene

- Physics
- 2021

Stanene was proposed to be a large-gap quantum spin Hall insulator, yet to date, convincing evidence of topological edge states in stanene remains to be seen, partly due to the fact that the…

Determination of the helical edge and bulk spin axis in quantum spin Hall insulator WTe2

- Physics
- 2020

Evidence for the quantum spin Hall (QSH) effect has been seen in several systems in the form of approximately quantized edge conductance. However, its true defining feature and smoking gun is…

Coexistence of Robust Edge States and Superconductivity in Few-Layer Stanene.

- PhysicsPhysical review letters
- 2022

High-quality stanene films have been actively pursued for realizing not only quantum spin Hall edge states without backscattering, but also intrinsic superconductivity, two central ingredients that…

Topological properties of bulk and bilayer 2M WS2: a first-principles study

- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2021

A comprehensive investigation of the bulk phase of bulk WS2 is reported, comparing structural and electronic properties obtained from different exchange correlation functionals to the experimentally reported values and predicts bilayer 2M WS2 as a new two-dimensional topological material.

Atomically Thin Quantum Spin Hall Insulators

- PhysicsAdvanced materials
- 2021

In particular, theoretical predictions of nontrivial superconducting pairing in the QSH state toward Majorana-based topological quantum computing are discussed, which are the next frontier in QSH materials research.

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