Hyper-vortices in granular superconducting thin film bridges
1990; Elsevier BV; Volume: 165-166; Linguagem: Inglês
10.1016/s0921-4526(09)80390-6
ISSN1873-2135
AutoresG. A. Ovsyannikov, Z. G. Ivanov, G. Brorsson, T. Claeson,
Tópico(s)Magnetic confinement fusion research
ResumoDC 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 do and rf properties may be explained within a model with coherent motion of hyper-vortices that are larger than grain sizes.
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