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Updated: Jan 4, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
Published on: April 12, 2018
Josephson coupled Ising pairing induced in suspended MoS2 bilayers by double-side ionic gating
O Zheliuk1, J M Lu1,2,3, Q H Chen1
1Device Physics of Complex Materials, Zernike Institute for Advanced Materials, University of Groningen, Groningen, the Netherlands.
Superconductivity in suspended MoS2 bilayers exhibits a coupled state with strong spin-orbit coupling. Symmetric ionic liquid gating controls Josephson coupling, enabling a dimensional crossover in the bilayer system.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Materials
Background:
- Superconductivity in monolayer transition metal dichalcogenides arises from Ising-type pairing and strong spin-orbit coupling.
- Coupling multiple layers leads to exotic superconducting phases influenced by Ising protection and interlayer interactions.
Purpose of the Study:
- To investigate superconductivity in suspended MoS2 bilayers.
- To explore the emergence of coupled superconducting states and control interlayer interactions.
Main Methods:
- Inducing superconductivity in suspended MoS2 bilayers.
- Utilizing symmetric ionic liquid gating to tune interlayer coupling and electronic states.
- Analyzing electronic states with broken local inversion symmetry while preserving global inversion symmetry.
Main Results:
- Observation of a coupled superconducting state in MoS2 bilayers with strong Ising-type spin-orbit coupling.
- Demonstration of suppressed Ising protection, indicating a coupled superconducting state.
- Symmetric gating successfully induced superconductivity in both layers and controlled Josephson coupling.
Conclusions:
- Symmetric gating provides a method to tune interlayer interactions and Josephson coupling in MoS2 bilayers.
- The study reveals a dimensional crossover in bilayer MoS2 due to controlled interlayer coupling.
- This work offers insights into exotic superconducting phases in layered materials.
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