Premium
Suppression of superconductivity and normal state electrical transport in Y 1− x Pr x BaSrCu 3 O 7− δ and Y 1− x Pr x Ba 2 Cu 3 O 7− δ systems
Author(s) -
Gupta Anurag,
Sedky A.,
Narlikar A. V.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301975
Subject(s) - electrical resistivity and conductivity , superconductivity , residual resistivity , condensed matter physics , superconducting transition temperature , state (computer science) , chemistry , physics , materials science , analytical chemistry (journal) , mathematics , algorithm , quantum mechanics , chromatography
The structure, normal state electrical transport and superconducting critical temperatures ( T c ) of Y 1− x Pr x BaSrCu 3 O 7− δ (i.e., Y(Pr)‐1113) and Y 1− x Pr x Ba 2 Cu 3 O 7− δ (i.e., Y(Pr)‐123) systems, with 0.00 ≤ x ≤ 1.00 and 6.93 ≤ 7 − δ ≤ 6.95, have been investigated. Residual resistivity ( ρ 0 ) and resistivity slope ((d ρ /d T ) cc ) corresponding to the linear ρ ‐ T region are determined from the normal state resistivity measurements. It is found that an increase in ρ 0 and (d ρ /d T ) cc correlates with a decrease and enhancement of T c ( x ), respectively. Interestingly, in both the systems, the destruction of superconductivity seems to occur at the same value of x where (d ρ /d T ) cc tends to zero. The observed correlations suggest a possible mechanism of superconductivity in these systems, which is discussed. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)