Gate-induced superconductivity in a monolayer topological insulator

Abstract

The layered semimetal WTe_2 has recently been found to be a two-dimensional topological insulator (2D TI) when thinned down to a single monolayer, with conducting helical edge channels. We report here that intrinsic superconductivity can be induced in this monolayer 2D TI by mild electrostatic doping, at temperatures below 1 K. The 2D TI-superconductor transition can be easily driven by applying a just a small gate voltage. This discovery offers new possibilities for gate-controlled devices combining superconductivity and topology, and could provide a basis for quantum information schemes based on topological protection.

arXiv commentmanuscript only

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Cited by in corpus (151)

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• Evidence for equilibrium excitons and exciton condensation in monolayer WTe2
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• Visualization of Topological Boundary Modes Manifesting Topological Nodal-Point Superconductivity
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• Direct measurement of ferroelectric polarization in a tunable semimetal
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• Experimental Progress on Layered Topological Semimetals
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• Determination of the spin axis in quantum spin Hall insulator monolayer WTe2
• Driven Dissipative Majorana Dark Spaces
• Electric field effects on the band gap and edge states of monolayer 1T'-WTe2
• Unconventional Superconducting Quantum Criticality in Monolayer WTe2
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• Negative resistance state in superconducting NbSe${}_2$ induced by surface acoustic waves
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• Observation of Shubnikov-de Haas Oscillations in Large-Scale Weyl Semimetal WTe2 Films
• Direct observation of topological surface state in the topological superconductor 2M-WS2
• Dirac lines and loop at the Fermi level in the Time-Reversal Symmetry Breaking Superconductor LaNiGa${}_2$
• Tunable Low-Loss Hyperbolic Plasmon Polaritons in a T${}_d$-WTe${}_2$ Single Layer
• Towards dark space stabilization and manipulation in driven dissipative Majorana platforms
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• Tunable plasmons in large area WTe2 thin films
• The soft-mode phonons mediated unconventional superconductivity in monolayer 1T'-WTe2
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• Polaron spectroscopy of interacting Fermi systems: insights from exact diagonalization
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• Enhanced Superconductivity in Monolayer $T_d$-MoTe${}_2$ with Tilted Ising Spin Texture
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• The Detection of Unconventional Quantum Oscillations in Insulating 2D Materials
• Spin relaxation, Josephson effect and Yu-Shiba-Rusinov states in superconducting bilayer graphene
• Transport anomalies in the layered compound BaPt4Se6
• A Platform for Far-Infrared Spectroscopy of Quantum Materials at Millikelvin Temperatures
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• Observation of nearly identical superconducting transition temperatures in pressurized Weyl semimetal MIrTe4 (M=Nb and Ta)
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• Anisotropic ultrafast spin/valley dynamics in WTe2 films
• Observation of two-level critical-state in a van-der-Waals superconductor Pt(Bi${}_{1-x}$Se${}_x$)${}_2$
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