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Critical magnetic fields, electric resistance, and density of electronic states in superconducting crystalline and amorphous technetium-carbon films

Journal Article · · Sov. Phys. - JETP (Engl. Transl.); (United States)
OSTI ID:6755424
The superconducting transition temperatures T/sub c/, perpendicular critical magnetic fields H/sub c/perpendicular, and resistivities are measured in technetium-carbon films for three metastable states: for a supersaturated hcp solid solution of carbon in technetium, for the amorphous phase, and for the cubic phase. The density of the electronic states is determined on the basis of data on Vertical BardH/sub c/perpendicular/dTVertical Bar and the residual resistivity rho/sub 0/. The properties of the films in the crystalline and amorphous phases are compared. The correlation between the variation of T/sub c/ and N on going from one phase to another, or when the composition is varied within a given phase, is investigated. It is concluded that the amorphous and cubic phases are characterized by a stronger electron-phonon interaction than the hcp phase.
Research Organization:
I. V. Kurchatov Institute of Atomic Energy
OSTI ID:
6755424
Journal Information:
Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 58:2; ISSN SPHJA
Country of Publication:
United States
Language:
English