• Rapid Communication

Influence of bonding on superconductivity in high-pressure hydrides

Christoph Heil and Lilia Boeri
Phys. Rev. B 92, 060508(R) – Published 27 August 2015

Abstract

The recent reports on high-temperature superconductivity above 190 K in hydrogen sulfide at 200 GPa pressure, exceeding all previously discovered superconductors, has greatly invigorated interest in dense hydrogen-rich solids. Here, we investigate a possible way to optimize the critical temperature in these compounds by using first-principles linear-response calculations. We construct hypothetical alchemical atoms to smoothly interpolate between elements of the chalcogen group and study their bonding and superconducting properties. Our results show that the already remarkable critical temperatures of H3S could be improved even further by increasing the ionic character of the relevant bonds, i.e., partially replacing sulfur with more electronegative elements.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 10 July 2015

DOI:https://doi.org/10.1103/PhysRevB.92.060508

©2015 American Physical Society

Authors & Affiliations

Christoph Heil* and Lilia Boeri

  • Institute of Theoretical and Computational Physics, Graz University of Technology, NAWI Graz, 8010 Graz, Austria

  • *christoph.heil@tugraz.at

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 92, Iss. 6 — 1 August 2015

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×