2001/07/02 by V. N. Bogomolov, Bogomolov, V. N.
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con) #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0107029
5 pages, REVTeX
arxiv created 2001/07/02 · openalex publication_date 2001/07/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The paper considers the possibility of superconductivity setting in when the distance aB between molecules (atoms) is such that aF < aB < aW, where aF and aW are the equilibrium separations in Fermi metals and van der Waals insulators. The last has no band sructure. This is the binding energy region 40--60 kJ/mol. However, neither stretch of metals ("dilution" by insulators) nor compression of insulators to a=aB produce substances stable under normal conditions. It was proposed to stabilize such substances prepared of insulators by adsorbing their atoms (molecules) on metal catalysts to obtain (Metal)(Insulator)X-type systems for X > 1. The well-known method of metal sputtering in a gaseous atmosphere has used to successfully obtain such "sorption compounds" and collect with magnetic funnels clusters of diamagnetic particles kept suspended in a magnetic field gradient ~100 G/cm at 300 K (the levitation effect).