Issue 3, 2019

Superconductivity and structural instability in layered BiS2-based LaO1−xBiS2

Abstract

The exploration of new superconductors is always an unremitting work for researchers. The recent discovery of superconductivity in layered BiS2-based materials is important progress. Except for superconducting properties, the structure is a key point to debate at present. Here, we have synthesized polycrystalline and single crystalline LaO1−xBiS2 superconducting samples. It has been found that the semiconductor behavior of the parent phase LaOBiS2 was suppressed by oxygen vacancies, and a semiconductor–metal transition in the normal state was observed. The highest superconducting transition temperature reaches 3.2 K. Single-crystal X-ray diffraction analysis indicates that three different structures coexisted in the same batch of crystals, including tetragonal, monoclinic and triclinic structures. The present work shows that the introduction of oxygen vacancies is an alternative approach to induce superconductivity in the LaOBiS2 system and the structural instability is observed experimentally.

Graphical abstract: Superconductivity and structural instability in layered BiS2-based LaO1−xBiS2

Supplementary files

Article information

Article type
Paper
Submitted
14 Nov 2018
Accepted
11 Dec 2018
First published
12 Dec 2018

J. Mater. Chem. C, 2019,7, 586-591

Superconductivity and structural instability in layered BiS2-based LaO1−xBiS2

Y. Chen, Y. Cui, A. Pham, Y. Wang, M. M. Bhadbhade, R. Wang, Y. Su, H. Hu, Z. Wen, C. Cheng, T. T. Tan, S. Li and Y. Zhao, J. Mater. Chem. C, 2019, 7, 586 DOI: 10.1039/C8TC05729J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements