Hyper-vortices in granular superconducting thin film bridges

✍ Scribed by G.A. Ovsyannikov; Z.G. Ivanov; G. Brorsson; T. Claeson

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 307 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(09)80390-6

✦ Synopsis

DC and microwave properties of granular superconducting bridges made of YBCO thin films have been investigated experimentally. The resistance of a microbridge increased step-wise at increasing bias. Microwave radiation, with a bandwidth of 300 MHz, has been observed with maximum amplitudes at certain dc-biases. The dc and rf properties may be explained within a model with coherent motion of hyper-vortices that are larger than grain sizes.