Influence of the Granularity on the Transversal Resistance in Y0.55Pr0.45Ba2Cu3O7 - δ Superconductor
M.S. da Luza, b, C.A.M. dos Santosb and A.J.S. Machadob
aInstituto de Ciências Tecnológicas e Exatas, Universidade Federal do Triângulo Mineiro, Uberaba, Brazil
bDepartamento de Engenharia de Materiais, Escola de Engenharia de Lorena-USP, Brazil
Received: October 18, 2010; In final form: August 29, 2012
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This work reports longitudinal (RXX) and transverse (RXY) resistance as a function of temperature measured at low magnetic fields for Y0.55Pr0.45Ba2Cu3O7 - δ polycrystalline sample. It is observed non-zero transverse resistance at zero applied magnetic field below superconducting transition. The comparison between RXX (T) and RXY (T) curves demonstrate unambiguously that the transverse resistance is related to the double resistive superconducting transition in granular superconductors. I-V curves indicate that the transport properties of the investigated sample are in agreement with the predictions of the two-fluid model.

DOI: 10.12693/APhysPolA.124.702
PACS numbers: 74.25.-q, 74.25.Fy, 74.81.Bd