Bulk superconductivity in single phase Bi3O2S3

TL;DR

This paper reports the synthesis of a single-phase Bi3O2S3 sample that exhibits bulk type-II superconductivity at 5.8 K, with evidence of multiband conduction and low charge carrier density.

Contribution

The study successfully synthesizes single-phase Bi3O2S3 and demonstrates its bulk superconductivity, providing insights into its electronic properties and conduction mechanisms.

Findings

Bi3O2S3 exhibits bulk superconductivity at 5.8 K.

The superconductor is classified as type-II based on magnetization data.

Electronic measurements reveal multiband conduction with low charge carrier density.

Abstract

We report the synthesis of single phase Bi3O2S3 sample and confirm the occurrence of bulk superconductivity with transition temperature at 5.8 K. The Bi3O2S3 super-conductor is categorized as the typical type-II supercon-ductor based on the results of both temperature and mag-netic field dependences of magnetization. Hall coefficient measurements give evidence of a multiband character, with a dominant conduction mainly by electron-like charge carriers. The charge carrier density is about 1.45 X 1019 cm3, suggesting that the system has very low charge carrier density.