Gaplessness and the Coulomb anomaly in the strongly disordered films of Molybdenum Carbide

TL;DR

This paper investigates the emergence of gaplessness in strongly disordered MoC films near the superconductor-insulator transition, attributing it to enhanced Coulomb interactions caused by reduced screening.

Contribution

It reveals that strong disorder leads to loss of screening and increased Coulomb interactions, resulting in gaplessness in MoC films close to the transition.

Findings

Gaplessness observed near the superconductor-insulator transition.

Enhanced Coulomb interactions due to disorder cause gaplessness.

Loss of screening in disordered films is key to the phenomenon.

Abstract

Gaplessness was observed in the disordered films of MoC on approaching to the superconductor to insulator transition by reducing the film thickness. The gaplessness is attributed to the enhanced Coulomb interactions due to the loss of screening in the presence of strong disorder in the films.