Origin of the critical temperature discontinuity in superconducting sulfur under high pressure
M. Monni, F. Bernardini, A. Sanna, G. Profeta, S. Massidda
DOI 10.1103/PhysRevB.95.064516 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Elemental sulfur shows a superconducting phase at high pressure (above 100 GPa), with critical temperatures that rise up to 20 K [Phys. Rev. B 65, 064504 (2002); Nature (London) 525, 73 (2015)] and presenting a jump at about 160 GPa, close to a structural phase transition to the β-Po phase. In this work we present a theoretical and fully ab initio characterization of sulfur based on superconducting density functional theory (SCDFT), focusing in the pressure range from 100 to 200 GPa. Calculations result in very good agreement with available experiments and point out that the origin of the critical temperature discontinuity is not related to the structural phase transition but induced by an electronic Lifshitz transition. This brings a strongly (interband) coupled electron pocket available for the superconducting condensation.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| H3S Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 200 | Pressure not reported | unknown |
Similar papers
Influence of bonding on superconductivity in high-pressure hydrides
similarity 0.95Christoph Heil & Lilia Boeri
Source status unknown — claims are unverified
First-principles study of the pressure and crystal-structure dependences of the superconducting transition temperature in compressed sulfur hydrides
similarity 0.95Ryosuke Akashi et al.
Source status unknown — claims are unverified
Effect of Van Hove singularities on high-Tc superconductivity in H3S
similarity 0.95Wataru Sano et al.
Source status unknown — claims are unverified
High-Temperature Superconducting Phases in Cerium Superhydride with a Tc up to 115 K below a Pressure of 1 Megabar
similarity 0.95Wuhao Chen et al.
Source status unknown — claims are unverified
Robustness of superconductivity to competing magnetic phases in tetragonal FeS
similarity 0.95Franziska K. K. Kirschner et al.
Source status unknown — claims are unverified
Superconductivity by doping in alkali-metal hydrides without applied pressure: An ab initio study
similarity 0.95M. A. Olea-Amezcua et al.
Source status unknown — claims are unverified