This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1109/TASC.2007.898674 in citations.
Electrical transport and noise properties of [100]-tilt YBa2Cu3O7-x grain-boundary junctions with high IcRn product
Electrical transport and noise properties of [100]-tilt YBa2Cu3O7-x grain-boundary junctions with high IcRn product
We have studied electrical transport and low-frequency noise properties of [100]-tilt bicrystal YBa2Cu3O7-x junctions, which show a lower degree of structural disorder and higher characteristic voltages IcRn in comparison with conventional [001]-tilt grain-boundary junctions. The oxygen content of t...
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Personal Name(s): | Lyatti, M. V. |
---|---|
Poppe, U. / Divin, Y. Y. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-8 |
Published in: | IEEE transactions on applied superconductivity, 17 (2007) S. 314 - 317 |
Imprint: |
New York, NY
IEEE
2007
|
Physical Description: |
314 - 317 |
DOI: |
10.1109/TASC.2007.898674 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
IEEE Transactions on Applied Superconductivity
17 |
Subject (ZB): | |
Publikationsportal JuSER |
We have studied electrical transport and low-frequency noise properties of [100]-tilt bicrystal YBa2Cu3O7-x junctions, which show a lower degree of structural disorder and higher characteristic voltages IcRn in comparison with conventional [001]-tilt grain-boundary junctions. The oxygen content of the junction barrier was varied by an annealing in atomic oxygen and by aging in molecular oxygen. The modification of the I-V curves and low-frequency noise were monitored. The terahertz losses in the junctions were derived and were shown to decrease with the increase of the oxygen content. It was found that the resistance and critical current fluctuations are completely antiphase correlated and intensities of normalized resistance and critical current low-frequency fluctuations are equal in these junctions. Consequently, quasiparticles and Cooper pairs in the [100]-tilt junctions tunnel directly through the same parts of the barrier, and a band-bending model with the charge fluctuations at the barrier can applied to explain-the modification of the [100]-tilt grain-boundary junctions after oxygen loading and aging. |