# Strong dopant dependence of electric transport in ion-gated MoS2

## TL;DR

This study explores how different ionic dopants, lithium and potassium, alter the electronic transport and phase states of MoS2, revealing dopant-dependent transitions from superconductivity to insulating behavior.

## Contribution

It demonstrates that ionic species can selectively induce distinct electronic phases in MoS2, advancing understanding of dopant effects in 2D materials.

## Key findings

- Li+ induces inhomogeneous superconductivity
- K+ causes disorder-driven metal-insulator transition
- Dopant type controls electronic phase in MoS2

## Abstract

We report modifications of the temperature-dependent transport properties of $\mathrm{MoS_2}$ thin flakes via field-driven ion intercalation in an electric double layer transistor. We find that intercalation with $\mathrm{Li^+}$ ions induces the onset of an inhomogeneous superconducting state. Intercalation with $\mathrm{K^+}$ leads instead to a disorder-induced incipient metal-to-insulator transition. These findings suggest that similar ionic species can provide access to different electronic phases in the same material.