Abstract
We report the fluctuation-induced conductivity of Ca doped Y 1Ba 2Ca 3O 7−δ samples. The analysis has been done with partial substitution of Ca(II) in place of Y(III). The Ca contents are 0.02, 0.05, 0.1 and 0.2. In each case excess conductivity has been analysed and we tried to make a fit with the Aslamazov-Larkin and Lawrence-Doniach equations. It is observed that our data fit well with the 3D AL equation and a cross-over from 2D to 3D has been found in our samples. For the first time we have employed this transition to estimate the Josephson coupling strength in the multiperiodic layered defect superconductor. This interlayer coupling strenght J that controls the transition decreases with increase in Ca content. The variation of the Josephson coupling strength and T c with x have been discussed. The Ginzburg-Landau coherence lengths ξ c(0) for all cases have also been calculated and plotted.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
