Superconductivity in bismuth pyrochlore lattice compounds RbBi2 and CsBi2: the role of relativistic effects

19 September 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Superconducting properties of two bismuthide intermetallic compounds, RbBi2 and CsBi2, were studied by means of experimental measurements and ab initio calculations. We show that in both compounds the superconductivity emerges from the pyrochlore Bi lattice and its formation is heavily influenced by relativistic effects. Based on our analysis of the effect of spin-orbit coupling on the electron-phonon coupling we suggest a possible criterion for finding new superconducting materials by looking for structures featuring relativistically-stabilized hypervalent networks of heavy p-block elements.

Keywords

superconductivity
electron-phonon coupling
relativistic effects
Laves phases

Supplementary materials

Title
Description
Actions
Title
Supplementary material
Description
Crystallographic data for RbBi2 and CsBi2, supplementary plots.
Actions

Comments

Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.