Superconducting state in the atomic metallic hydrogen just above the pressure of the molecular dissociation

R. Szczȩśniak, D. Szczȩśniak, E. A. Drzazga

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Above the pressure of ∼500GPa, the molecular metallic hydrogen gets converted into the atomic phase. The properties of the superconducting state in the metallic hydrogen just above the molecular-atomic phase transition have been examined in the paper (p=539 GPa). The numerical calculations have been conducted in the framework of the Eliashberg formalism. It has been stated that the critical temperature (T C) is equal to 360 K when the Coulomb pseudopotential takes the value of 0.1. In the considered case, T C considerably exceeds the value calculated with the help of the McMillan or Allen-Dynes formula. The remaining thermodynamic parameters significantly diverge from the canonical values predicted by the BCS theory. In particular: ≡2Δ(0)/ kBTC=4.95, RC≡ΔC( TC)/ CN( TC)=2.78, and RHTCCN( TC)/HC2(0)=0.126.

Original languageEnglish
Pages (from-to)2023-2026
Number of pages4
JournalSolid State Communications
Volume152
Issue number22
DOIs
Publication statusPublished - Nov 2012
Externally publishedYes

Fingerprint

metallic hydrogen
Hydrogen
dissociation
BCS theory
pseudopotentials
critical temperature
Phase transitions
Thermodynamics
formalism
thermodynamics
Temperature

Keywords

  • A. Atomic metallic hydrogen
  • D. High-pressure effects
  • D. Superconductivity
  • D. Thermodynamic properties

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Chemistry

Cite this

Superconducting state in the atomic metallic hydrogen just above the pressure of the molecular dissociation. / Szczȩśniak, R.; Szczȩśniak, D.; Drzazga, E. A.

In: Solid State Communications, Vol. 152, No. 22, 11.2012, p. 2023-2026.

Research output: Contribution to journalArticle

Szczȩśniak, R. ; Szczȩśniak, D. ; Drzazga, E. A. / Superconducting state in the atomic metallic hydrogen just above the pressure of the molecular dissociation. In: Solid State Communications. 2012 ; Vol. 152, No. 22. pp. 2023-2026.
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