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Published November 20, 1991 | public
Journal Article

Scaling of the irreversibility line with superconducting transition temperature in oxygen deficient YBa_2Cu_3O_(7−δ)

Abstract

We report AC susceptibility and resistivity measurements of the vortex motion in single crystal YBa_2Cu_3O_(7−δ), with δ ~ 0.62. The superconducting transition temperature was varied from 7 K to 17 K by altering the oxygen vacancy ordering in the chains. We find that both the slope of the irreversibility line and its extrapolated zero temperature value scale linearly with T_c, providing strong evidence for the intrinsic nature of the irreversibility line. Moreover, the reduced magnetic field scale of oxygen deficient crystals allows us to obtain new results at previously inaccessible reduced temperatures, well below T_c.

Additional Information

Copyright © 1991 Published by Elsevier. Received 12 August 1991. Revised manuscript received 11 September 1991. We are grateful to J. Burdett, G. Grinstein, K. Levin, P. Littlewood, and J. Marko for helpful discussions. The work at The University of Chicago was supported by the NSF Science and Technology Center for Superconductivity, Grant No. DMR 88-09854. DLH acknowledges support from the NSF Materials Research Laboratory at The University of Chicago, Grant No. DMR 88-19860. JWD, APP and BWV acknowledge support from US DOE, BES-Materials Sciences, Contract No. W-31-109-ENG-38.

Additional details

Created:
August 20, 2023
Modified:
March 5, 2024