Coulomb Blockade Spectroscopy of a ${\mathrm{MoS}}_2$ Nanotube

Abstract

Low-temperature transport spectroscopy measurements on a quantum dot lithographically defined in a multiwall ${\mathrm{MoS}}_2$ nanotube are demonstrated. At $T=300\mathrm{mK}$, clear Coulomb blockade is observed, with charging energies in the range of 1 meV. In single-electron tunneling, discrete conductance resonances are visible at finite bias. Additionally, a magnetic field perpendicular to the nanotube axis reveals clear indications of quantum state transitions, with effective $g$ factors consistent with published theoretical predictions.

arXiv commentPublished version (open access, CC-BY 4.0); 4 pages, 3 figures

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• Gate-defined, Accumulation-mode Quantum Dots in Monolayer and Bilayer WSe${}_2$
• Spin-valley system in a gated MoS${}_2$-monolayer quantum dot
• Non-Destructive Low-Temperature Contacts to MoS2 Nanoribbon and Nanotube Quantum Dots