5 papers · 1 filter
Superconductivity in the Nb2SnC compound
A. D. Bortolozo, O. H. SantAnna, M. S. da Luz +4
Nb2SnC is a member of the large family of lamellar materials that crystallize in the hexagonal structure with space group P63/mmc which are isomorphs with Cr2AlC, also named H-phas…
Transport Properties of Granular High-TC Superconductors
M. S. da Luz, C. A. M. dos Santos, M. J. R. Sandim +1
We report on the application of the Resistively Shunted Junction (RSJ) model to granular high-TC superconductors. Some derived predictions of the RSJ model are applied to a set of…
Observation of double superconducting transition in Y0.55Pr0.45Ba2Cu3O7-d polycrystalline sample by Hall effect measurement
M. S. da Luz, C. A. M. dos Santos*, A. J. S. Machado
This work reports longitudinal (RXX) and transverse (RXY) resistance as a function of the temperature measured at low magnetic fields for a Y0.55Pr0.45Ba2Cu3O7-d polycrystalline sa…
Two-Fluid Model for Granular Superconductors
C. A. M. dos Santos, C. J. V. Oliveira, M. S. da Luz +3
A two-fluid model is proposed to describe the transport properties of granular superconductors. Using the resistively shunted junction model and some aspects of the two-level syste…
Current-Induced Superconductor-Insulator Transition in Granular High-T_c Superconductors
Y. Kopelevich, C. A. M. dos Santos, S. Moehlecke +1
In this work we report a systematic study of electrical current effects on superconducting properties of granular YPrBaCuO samples with x close to…