1999/08/31 by V. N. Bogomolov, Bogomolov, V. N.
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Solid-state spectroscopy and crystallography #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/9908467
RevTeX, 7 pages, no figures
arxiv created 1999/08/31 · openalex publication_date 1999/08/31 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is shown that the rapid increase of the superconducting transition temperature Tc of sulphur with increasing pressure above 93 GPa does not contradict with some hypothetical ``electronic'' mechanism of superconductivity with participation of the electron interaction energy fluctuations. Such ``electronic'' mechanism is supposed to be intrinsic property of the molecular condensates and corresponds to very high Tc. The low Tc of sulphur (10 -17)K is likely connected with the magnetic properties of the sulphur atoms and molecules. The equation of state for sulphur is obtained. The molar volume of sulphur at metallization is 10 cm3/mol. The principal difference between the ''physical'' and the ''chemical'' type bonds are discussed. Under some pressure one bond type is changed by another andTcmay have an extremum (transition from the Bose condensation to the BCS superconductivity).