Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
76 (2000), S. 3088-3090
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The Gd and oxygen doping effects on the Josephson coupling in Bi2Sr2Ca1−xGdxCu2O8+δ single crystals have been studied systematically. It was found that a pseudo-transition at temperature TcJ, attributed to the Josephson coupling between CuO2 layers, shifts dramatically to lower temperature with increasing magnetic field, and the temperature dependence of the pseudo-upper-critical-field HcJ associated with the coupling shows a clear upward curvature. For the Gd-doped as compared with the oxygen-doped crystal, the value of TcJ is smaller at the same carrier density, which implies that the substitution of Gd for Ca reduces the Josephson coupling more severely. The characteristics of the pseudo-transition associated with the Josephson coupling between CuO2 layers are different from those of the superconducting transition occurring in the CuO2 layers. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.126532
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