J.G. Bednorz, K.A. Müller
Physica B+C
Paper
Large electric field effects in YBa2Cu3O 7-δ films containing weak links
Abstract
The influence of applied electric fields on the transport properties of weak links in YBa2Cu3O7-δ films has been investigated. It is found that the critical temperature Tc0 of epitaxial films containing weak links can be reduced by 10 K with applied electric fields of 6 MV/cm. In one case, Tc0 shifts of up to 25-30 K were observed. These are by far the largest Tc shifts reported for any superconducting system.
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