From Coulomb Blockade to Resonant Transmission in a MoS2 Nanoribbon

TL;DR

This study investigates electron transport in a MoS2 nanoribbon, revealing a transition from Coulomb blockade to resonant transmission, and providing insights into quasi-ballistic transport length scales.

Contribution

It demonstrates the evolution of quantum dot behavior in MoS2 nanoribbons and identifies conditions for resonant transmission through disorder-induced wells.

Findings

Transition from multiple quantum dots to a single quantum dot regime

Resonant transmission observed at higher Fermi energies

Insights into quasi-ballistic transport length scale

Abstract

We have measured a nanoribbon of MoS2 at low temperature, and observed the evolution of the system from a regime of multiple small quantum dots in series to one where the entire nanoribbon acts as a single quantum dot. At higher Fermi energies, resonant transmission through disorder-induced potential wells is evident. Our findings shed light on the length scale of quasi-ballistic transport in the material.