Unconventional isotope effect on transition temperature in BiS2-based superconductor Bi4O4S3

Rajveer Jha; Yoshikazu Mizuguchi

doi:10.35848/1882-0786/abacdf

Unconventional isotope effect on transition temperature in BiS2-based superconductor Bi4O4S3

Superconductivity 2020-09-03 v2

Authors: Rajveer Jha , Yoshikazu Mizuguchi

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Abstract

We report the sulfur isotope effect on transition temperature in a BiS2-based superconductor Bi4O4S3. Polycrystalline samples of Bi4O4S3 were prepared using 32S and 34S isotope chemicals. From magnetization analyses, the isotope exponent (aS) was estimated as -0.1 < aS < 0.1. Although the Tc estimated from electrical resistivity was scattered as compared to those estimated from the magnetization, we observed no clear correlation between Tc and the isotope mass. The present results suggest that unconventional paring states are essential in Bi4O4S3.

Keywords

bismuth sulfide superconductor isotope effect transition temperature bi4o4s3 unconventional pairing

Cite

@article{arxiv.2007.06696,
  title  = {Unconventional isotope effect on transition temperature in BiS2-based superconductor Bi4O4S3},
  author = {Rajveer Jha and Yoshikazu Mizuguchi},
  journal= {arXiv preprint arXiv:2007.06696},
  year   = {2020}
}

Comments

10 pages, 4 figures

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