Trimming of High-Tc Bicrystal Josephson Junctions by Ozone and Vacuum Annealing
نویسندگان
چکیده
منابع مشابه
Persistent photoconductivity in high Tc grain boundary Josephson junctions
We observed persistent photoconductivity in YBa2Cu3Ox bicrystal grain boundary Josephson junctions. Upon illumination of these grain boundary Josephson junctions, the normal state resistance decreases and the critical current increases. This strongly suggests that the grain boundary in these films consists of oxygen depleted YBa2Cu3Ox . A comparison with the persistent photoconductivity in oxyg...
متن کاملSubharmonic Shapiro steps in high-Tc Josephson junctions
We studied the response of high-Tc biepitaxial grain boundary junctions to 100 GHz radiation in the presence of a magnetic field. Integer as well as subharmonic constant voltage steps are observed, even at one-fifth of the voltage separation between integer ~Shapiro! steps. Our results indicate that this behavior is due to the synchronized motion of Josephson vortices along the junction. We sho...
متن کاملHigh-Tc-based Josephson-junctions and SQUIDs by mechanically induced growth disorder
We have developped a simple method for the reproducible production of highTc based Josephson junctions and SQUIDs. By producing a very weak deformation into the substrate surface by a diamond needle before depostion of the thin high-Tc-film, the film shows a growth disturbance in the region of the deformation with quite interesting features, resulting in a Josephson junction. The substrate defo...
متن کاملMeasuring vacuum polarization with Josephson junctions.
We argue that the vacuum polarization by the virtual electron-positron pairs can be measured by studying a Josephson junction in a strong magnetic field. The vacuum polarization results in a weak dependence of the Josephson constant on the magnetic field strength which is within the reach of the existing experimental techniques.
متن کاملRecent Developments of High-Tc Electronic Devices with Multilayer Structures and Ramp-Edge Josephson Junctions
Recent developments of electronic devices containing Josephson junctions (JJ) with high-Tc superconductors (HTS) are reported. In particular, the fabrication process and the properties of superconducting quantum interference devices (SQUIDs) with a multilayer structure and ramp-edge-type JJs are described. The JJs were fabricated by recrystallization of an artificially deposited Cu-poor precurs...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Procedia
سال: 2012
ISSN: 1875-3892
DOI: 10.1016/j.phpro.2012.06.149