Unusual sulfur isotope effect and extremely high critical temperature in H3S superconductor

Recent experiments have set a new record for the transition temperature at which a material (hydrogen sulfide, H 3 S) becomes superconducting. Moreover, a pronounced isotope shift of T C in D 3 S is evidence of an existence of phonon-mediated pairing mechanism of superconductivity that is consistent...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2018-04, Vol.8 (1), p.1-9, Article 6037
Main Authors: Szczęśniak, Radosław, Durajski, Artur P.
Format: Article
Language:English
Subjects:
639/766/119/1003
639/766/119/995
Humanities and Social Sciences
Hydrogen sulfide
Isotopes
multidisciplinary
Science
Science (multidisciplinary)
Sulfur
Temperature effects
Transition temperatures
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recent experiments have set a new record for the transition temperature at which a material (hydrogen sulfide, H 3 S) becomes superconducting. Moreover, a pronounced isotope shift of T C in D 3 S is evidence of an existence of phonon-mediated pairing mechanism of superconductivity that is consistent with the well established Bardeen-Cooper-Schrieffer scenario. Herein, we reported a theoretical studies of the influence of the substitution of 32 S atoms by the heavier isotopes 33 S, 34 S and 36 S on the electronic properties, lattice dynamics and superconducting critical temperature of H 3 S. There are two equally fundamental results presented in this paper. The first one is an anomalous sulfur-derived superconducting isotope effect, which, if observed experimentally, will be subsequent argument that proves to the classical electron-phonon interaction. The second one is fact that critical temperature rise to extremely high value of 242 K for H 3 36 S at 155 GPa. This result brings us closer to the room temperature superconductivity.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-24442-8