We have investigated the electrical properties of Tl‐Ba‐Ca‐Cu‐O high‐Tc superconductor bicrystal grain boundary junctions. The behavior of the transport parameters is very similar to those obtained in YBaCuO7-δ junctions. In particular, the temperature dependence of the critical current and the scaling behavior of the critical current density as a function of the misorientation angle were analyzed. Relatively good control of the transport parameters as a function of the misorientation angle has been achieved. The current‐voltage characteristics showed a resistively shunted junction model‐like behavior at large angles (θ≥20°); at lower angles, the characteristics were more flux‐flow like. Preliminary results on noise characteristics are also presented.
Published in:
Applied Physics Letters
(Volume:65
,
Issue:
3
)
Date of Publication:
Jul 1994
- Page(s):
-
362
-
364
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.112376
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Jul 1994