We present a systematic investigation of superconductivity in a topological superconductor candidate $T_d{\text{-MoTe}}_2$ in the few-layer limit. By examining multiple mechanically exfoliated samples with different thicknesses, substrates, and crystal qualities, we quantitatively correlate superconducting temperature $\left(T_c\right)$ with disorder, carrier density, carrier type, and mobility. By integrating these experimental findings with first-principles calculations, we reveal the relationship between the band structure and superconductivity in this material. Notably, in two-layer samples we access a highly hole-doped regime that has not been systematically explored in previous experiments, providing a complementary perspective to earlier studies. In this regime, we demonstrate that superconductivity can be realized in a manner consistent with a conventional phonon-mediated $s_{(++)}$-wave pairing.

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• Coherence length
• Impurities in superconductors
• Multiband superconductivity
• Pairing mechanisms
• Superconducting fluctuations
• Superconductivity
• Topological superconductors
• Vortices in superconductors